87774290 has 16 divisors (see below), whose sum is σ = 158376600. Its totient is φ = 35024640.

The previous prime is 87774283. The next prime is 87774311. The reversal of 87774290 is 9247778.

It can be written as a sum of positive squares in 4 ways, for example, as 62362609 + 25411681 = 7897^2 + 5041^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6215 + ... + 14634.

Almost surely, 2^87774290 is an apocalyptic number.

87774290 is a deficient number, since it is larger than the sum of its proper divisors (70602310).

87774290 is a wasteful number, since it uses less digits than its factorization.

87774290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21277.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 87774290 is about 9368.7934121743. The cubic root of 87774290 is about 444.4154087744.

The spelling of 87774290 in words is "eighty-seven million, seven hundred seventy-four thousand, two hundred ninety".