88778220 has 48 divisors (see below), whose sum is σ = 251996640. Its totient is φ = 23348736.

The previous prime is 88778219. The next prime is 88778299. The reversal of 88778220 is 2287788.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5755 + ... + 14514.

It is an arithmetic number, because the mean of its divisors is an integer number (5249930).

Almost surely, 2^88778220 is an apocalyptic number.

It is an amenable number.

88778220 is an abundant number, since it is smaller than the sum of its proper divisors (163218420).

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

88778220 is a wasteful number, since it uses less digits than its factorization.

88778220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20354 (or 20352 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 88778220 is about 9422.2194837522. The cubic root of 88778220 is about 446.1033429678.

The spelling of 88778220 in words is "eighty-eight million, seven hundred seventy-eight thousand, two hundred twenty".