87210402 has 8 divisors (see below), whose sum is σ = 174420816. Its totient is φ = 29070132.

The previous prime is 87210401. The next prime is 87210413. The reversal of 87210402 is 20401278.

It is a sphenic number, since it is the product of 3 distinct primes.

87210402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (87210401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7267528 + ... + 7267539.

It is an arithmetic number, because the mean of its divisors is an integer number (21802602).

Almost surely, 2^87210402 is an apocalyptic number.

87210402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87210402 is a wasteful number, since it uses less digits than its factorization.

87210402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14535072.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 87210402 is about 9338.6509732402. The cubic root of 87210402 is about 443.4616781565.

The spelling of 87210402 in words is "eighty-seven million, two hundred ten thousand, four hundred two".