862797880 has 48 divisors (see below), whose sum is σ = 2258246520. Its totient is φ = 295815744.

The previous prime is 862797851. The next prime is 862797899. The reversal of 862797880 is 88797268.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 218142 + ... + 222061.

Almost surely, 2^862797880 is an apocalyptic number.

It is an amenable number.

862797880 is an abundant number, since it is smaller than the sum of its proper divisors (1395448640).

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

862797880 is a wasteful number, since it uses less digits than its factorization.

862797880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440228 (or 440217 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 55.

The square root of 862797880 is about 29373.4213192811. The cubic root of 862797880 is about 951.9987024204.

The spelling of 862797880 in words is "eight hundred sixty-two million, seven hundred ninety-seven thousand, eight hundred eighty".