977000022 has 64 divisors (see below), whose sum is σ = 2240145600. Its totient is φ = 315394560.

The previous prime is 976999997. The next prime is 977000041. The reversal of 977000022 is 220000779.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 977000022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480504 + ... + 482532.

It is an arithmetic number, because the mean of its divisors is an integer number (35002275).

Almost surely, 2^977000022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977000022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120072800).

977000022 is an abundant number, since it is smaller than the sum of its proper divisors (1263145578).

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

977000022 is a wasteful number, since it uses less digits than its factorization.

977000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318 (or 2312 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 977000022 is about 31256.9995680967. Note that the first 3 decimals coincide. The cubic root of 977000022 is about 992.2738002403.

Adding to 977000022 its sum of digits (27), we get a square (977000049 = 31257²).

The spelling of 977000022 in words is "nine hundred seventy-seven million, twenty-two", and thus it is an aban number.