977428 has 6 divisors (see below), whose sum is σ = 1710506. Its totient is φ = 488712.

The previous prime is 977413. The next prime is 977437. The reversal of 977428 is 824779.

It is a happy number.

977428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 925444 + 51984 = 962^2 + 228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122175 + ... + 122182.

2⁹⁷⁷⁴²⁸ is an apocalyptic number.

It is an amenable number.

977428 is a deficient number, since it is larger than the sum of its proper divisors (733078).

977428 is a wasteful number, since it uses less digits than its factorization.

977428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244361 (or 244359 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 977428 is about 988.6495840286. The cubic root of 977428 is about 99.2418668665.

The spelling of 977428 in words is "nine hundred seventy-seven thousand, four hundred twenty-eight".