87190452 has 96 divisors (see below), whose sum is σ = 234662400. Its totient is φ = 27979776.

The previous prime is 87190429. The next prime is 87190469. The reversal of 87190452 is 25409178.

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 31 ways as a sum of consecutive naturals, for example, 451668 + ... + 451860.

It is an arithmetic number, because the mean of its divisors is an integer number (2444400).

Almost surely, 2^87190452 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 87190452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117331200).

87190452 is an abundant number, since it is smaller than the sum of its proper divisors (147471948).

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

87190452 is a wasteful number, since it uses less digits than its factorization.

87190452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 87190452 is about 9337.5827707175. The cubic root of 87190452 is about 443.4278605729.

The spelling of 87190452 in words is "eighty-seven million, one hundred ninety thousand, four hundred fifty-two".