87400252 has 24 divisors (see below), whose sum is σ = 157172400. Its totient is φ = 42502656.

The previous prime is 87400231. The next prime is 87400259. The reversal of 87400252 is 25200478.

It is a self number, because there is not a number n which added to its sum of digits gives 87400252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87400259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45324 + ... + 47212.

It is an arithmetic number, because the mean of its divisors is an integer number (6548850).

Almost surely, 2^87400252 is an apocalyptic number.

It is an amenable number.

87400252 is a deficient number, since it is larger than the sum of its proper divisors (69772148).

87400252 is a wasteful number, since it uses less digits than its factorization.

87400252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 87400252 is about 9348.8101916768. The cubic root of 87400252 is about 443.7832383487.

The spelling of 87400252 in words is "eighty-seven million, four hundred thousand, two hundred fifty-two".