87764472 has 160 divisors (see below), whose sum is σ = 269723520. Its totient is φ = 26542080.

The previous prime is 87764459. The next prime is 87764483. The reversal of 87764472 is 27446778.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 341368 + ... + 341624.

It is an arithmetic number, because the mean of its divisors is an integer number (1685772).

Almost surely, 2^87764472 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 87764472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134861760).

87764472 is an abundant number, since it is smaller than the sum of its proper divisors (181959048).

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

87764472 is a wasteful number, since it uses less digits than its factorization.

87764472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 310 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 87764472 is about 9368.2694239651. The cubic root of 87764472 is about 444.3988381166.

The spelling of 87764472 in words is "eighty-seven million, seven hundred sixty-four thousand, four hundred seventy-two".