87440452 has 72 divisors (see below), whose sum is σ = 184373280. Its totient is φ = 35857920.

The previous prime is 87440393. The next prime is 87440461. The reversal of 87440452 is 25404478.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 628999 + ... + 629137.

It is an arithmetic number, because the mean of its divisors is an integer number (2560740).

Almost surely, 2^87440452 is an apocalyptic number.

It is an amenable number.

87440452 is an abundant number, since it is smaller than the sum of its proper divisors (96932828).

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

87440452 is a wasteful number, since it uses less digits than its factorization.

87440452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 87440452 is about 9350.9599507216. The cubic root of 87440452 is about 443.8512677166.

The spelling of 87440452 in words is "eighty-seven million, four hundred forty thousand, four hundred fifty-two".