870221392 has 40 divisors (see below), whose sum is σ = 1735638912. Its totient is φ = 422419200.

The previous prime is 870221383. The next prime is 870221423. The reversal of 870221392 is 293122078.

870221392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 135273 + ... + 141559.

Almost surely, 2^870221392 is an apocalyptic number.

870221392 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

870221392 is a deficient number, since it is larger than the sum of its proper divisors (865417520).

870221392 is a wasteful number, since it uses less digits than its factorization.

870221392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6547 (or 6541 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 870221392 is about 29499.5151146591. The cubic root of 870221392 is about 954.7212409719.

The spelling of 870221392 in words is "eight hundred seventy million, two hundred twenty-one thousand, three hundred ninety-two".