88431380 has 24 divisors (see below), whose sum is σ = 186034632. Its totient is φ = 35309952.

The previous prime is 88431367. The next prime is 88431391. The reversal of 88431380 is 8313488.

It can be written as a sum of positive squares in 4 ways, for example, as 1643524 + 86787856 = 1282^2 + 9316^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 88431380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8654 + ... + 15866.

It is an arithmetic number, because the mean of its divisors is an integer number (7751443).

Almost surely, 2^88431380 is an apocalyptic number.

It is an amenable number.

88431380 is an abundant number, since it is smaller than the sum of its proper divisors (97603252).

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

88431380 is a wasteful number, since it uses less digits than its factorization.

88431380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835 (or 7833 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 88431380 is about 9403.7960420247. The cubic root of 88431380 is about 445.5216371627.

The spelling of 88431380 in words is "eighty-eight million, four hundred thirty-one thousand, three hundred eighty".