87764442 has 8 divisors (see below), whose sum is σ = 175528896. Its totient is φ = 29254812.

The previous prime is 87764431. The next prime is 87764459. The reversal of 87764442 is 24446778.

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

87764442 is an admirable number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 87764394 and 87764403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313698 + ... + 7313709.

It is an arithmetic number, because the mean of its divisors is an integer number (21941112).

Almost surely, 2^87764442 is an apocalyptic number.

87764442 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.

87764442 is a wasteful number, since it uses less digits than its factorization.

87764442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14627412.

The product of its digits is 301056, while the sum is 42.

The square root of 87764442 is about 9368.2678228155. The cubic root of 87764442 is about 444.3987874812.

The spelling of 87764442 in words is "eighty-seven million, seven hundred sixty-four thousand, four hundred forty-two".