Search a number
-
+
87408229 = 732834231
BaseRepresentation
bin1010011010110…
…11111001100101
320002110210112211
411031123321211
5134334030404
612401243421
72110646326
oct515337145
9202423484
1087408229
1145381107
1225333571
131515535c
14b87444d
157a18b04
hex535be65

87408229 has 8 divisors (see below), whose sum is σ = 88939712. Its totient is φ = 85885920.

The previous prime is 87408199. The next prime is 87408241. The reversal of 87408229 is 92280478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87408229 - 25 = 87408197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87408191 and 87408200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87438229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18544 + ... + 22774.

It is an arithmetic number, because the mean of its divisors is an integer number (11117464).

Almost surely, 287408229 is an apocalyptic number.

It is an amenable number.

87408229 is a deficient number, since it is larger than the sum of its proper divisors (1531483).

87408229 is a wasteful number, since it uses less digits than its factorization.

87408229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4587.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 87408229 is about 9349.2368137726. The cubic root of 87408229 is about 443.7967392678.

The spelling of 87408229 in words is "eighty-seven million, four hundred eight thousand, two hundred twenty-nine".

Divisors: 1 73 283 4231 20659 308863 1197373 87408229