87239104 has 56 divisors (see below), whose sum is σ = 184727088. Its totient is φ = 40734720.

The previous prime is 87239101. The next prime is 87239107. The reversal of 87239104 is 40193278.

It is an interprime number because it is at equal distance from previous prime (87239101) and next prime (87239107).

It is a super-2 number, since 2×87239104² = 15221322533445632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 87239104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87239101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196707 + ... + 197149.

It is an arithmetic number, because the mean of its divisors is an integer number (3298698).

Almost surely, 2^87239104 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 87239104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92363544).

87239104 is an abundant number, since it is smaller than the sum of its proper divisors (97487984).

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

87239104 is a wasteful number, since it uses less digits than its factorization.

87239104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 87239104 is about 9340.1875784162. The cubic root of 87239104 is about 443.5103223576.

The spelling of 87239104 in words is "eighty-seven million, two hundred thirty-nine thousand, one hundred four".