Search a number
-
+
87706494 = 2324872583
BaseRepresentation
bin1010011101001…
…00101101111110
320010000221200200
411032210231332
5134423101434
612411504330
72113331031
oct516445576
9203027620
1087706494
1145565207
12254580a6
131522b045
14b911018
157a77199
hex53a4b7e

87706494 has 12 divisors (see below), whose sum is σ = 190030776. Its totient is φ = 29235492.

The previous prime is 87706483. The next prime is 87706517. The reversal of 87706494 is 49460778.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2436274 + ... + 2436309.

It is an arithmetic number, because the mean of its divisors is an integer number (15835898).

Almost surely, 287706494 is an apocalyptic number.

87706494 is an abundant number, since it is smaller than the sum of its proper divisors (102324282).

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

87706494 is a wasteful number, since it uses less digits than its factorization.

87706494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872591 (or 4872588 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 87706494 is about 9365.1745312087. The cubic root of 87706494 is about 444.3009586029.

The spelling of 87706494 in words is "eighty-seven million, seven hundred six thousand, four hundred ninety-four".

Divisors: 1 2 3 6 9 18 4872583 9745166 14617749 29235498 43853247 87706494