87403392 has 96 divisors (see below), whose sum is σ = 266366880. Its totient is φ = 27414528.

The previous prime is 87403357. The next prime is 87403441. The reversal of 87403392 is 29330478.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17353 + ... + 21815.

It is an arithmetic number, because the mean of its divisors is an integer number (2774655).

Almost surely, 2^87403392 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 87403392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133183440).

87403392 is an abundant number, since it is smaller than the sum of its proper divisors (178963488).

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

87403392 is a wasteful number, since it uses less digits than its factorization.

87403392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500 (or 4485 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 87403392 is about 9348.9781259772. The cubic root of 87403392 is about 443.7885528364.

The spelling of 87403392 in words is "eighty-seven million, four hundred three thousand, three hundred ninety-two".