87617292 has 60 divisors (see below), whose sum is σ = 238577976. Its totient is φ = 25025280.

The previous prime is 87617279. The next prime is 87617293. The reversal of 87617292 is 29271678.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (87617293) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27292 + ... + 30332.

Almost surely, 2^87617292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87617292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119288988).

87617292 is an abundant number, since it is smaller than the sum of its proper divisors (150960684).

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

87617292 is a wasteful number, since it uses less digits than its factorization.

87617292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076 (or 3053 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 87617292 is about 9360.4108884172. The cubic root of 87617292 is about 444.1502818931.

The spelling of 87617292 in words is "eighty-seven million, six hundred seventeen thousand, two hundred ninety-two".