Search a number
-
+
87733332 = 22322437037
BaseRepresentation
bin1010011101010…
…11010001010100
320010002022111200
411032223101110
5134424431312
612412232500
72113502211
oct516532124
9203068450
1087733332
1145583395
122546b730
131523a31b
14b91ab08
157a800dc
hex53ab454

87733332 has 18 divisors (see below), whose sum is σ = 221770458. Its totient is φ = 29244432.

The previous prime is 87733319. The next prime is 87733333. The reversal of 87733332 is 23333778.

It can be written as a sum of positive squares in only one way, i.e., 86378436 + 1354896 = 9294^2 + 1164^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2437037 = 87733332 / (8 + 7 + 7 + 3 + 3 + 3 + 3 + 2).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87733333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1218483 + ... + 1218554.

It is an arithmetic number, because the mean of its divisors is an integer number (12320581).

Almost surely, 287733332 is an apocalyptic number.

It is an amenable number.

87733332 is an abundant number, since it is smaller than the sum of its proper divisors (134037126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87733332 is a wasteful number, since it uses less digits than its factorization.

87733332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437047 (or 2437042 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 87733332 is about 9366.6072833230. The cubic root of 87733332 is about 444.3462723629.

The spelling of 87733332 in words is "eighty-seven million, seven hundred thirty-three thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 9 12 18 36 2437037 4874074 7311111 9748148 14622222 21933333 29244444 43866666 87733332