861172300 has 18 divisors (see below), whose sum is σ = 1868744108. Its totient is φ = 344468880.

The previous prime is 861172297. The next prime is 861172303. The reversal of 861172300 is 3271168.

It is an interprime number because it is at equal distance from previous prime (861172297) and next prime (861172303).

It is not an unprimeable number, because it can be changed into a prime (861172303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4305762 + ... + 4305961.

Almost surely, 2^861172300 is an apocalyptic number.

It is an amenable number.

861172300 is an abundant number, since it is smaller than the sum of its proper divisors (1007571808).

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

861172300 is a wasteful number, since it uses less digits than its factorization.

861172300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611737 (or 8611730 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 861172300 is about 29345.7373395183. The cubic root of 861172300 is about 951.4004460548.

The spelling of 861172300 in words is "eight hundred sixty-one million, one hundred seventy-two thousand, three hundred".