88721970 has 16 divisors (see below), whose sum is σ = 212932800. Its totient is φ = 23659184.

The previous prime is 88721959. The next prime is 88721987. The reversal of 88721970 is 7912788.

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, 1478670 + ... + 1478729.

It is an arithmetic number, because the mean of its divisors is an integer number (13308300).

Almost surely, 2^88721970 is an apocalyptic number.

88721970 is an abundant number, since it is smaller than the sum of its proper divisors (124210830).

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

88721970 is a wasteful number, since it uses less digits than its factorization.

88721970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957409.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 88721970 is about 9419.2340452926. The cubic root of 88721970 is about 446.0091058354.

The spelling of 88721970 in words is "eighty-eight million, seven hundred twenty-one thousand, nine hundred seventy".