77051228 has 24 divisors (see below), whose sum is σ = 137860800. Its totient is φ = 37672128.

The previous prime is 77051209. The next prime is 77051237. The reversal of 77051228 is 82215077.

It is a junction number, because it is equal to n+sod(n) for n = 77051194 and 77051203.

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, 33326 + ... + 35562.

It is an arithmetic number, because the mean of its divisors is an integer number (5744200).

Almost surely, 2^77051228 is an apocalyptic number.

It is an amenable number.

77051228 is a deficient number, since it is larger than the sum of its proper divisors (60809572).

77051228 is a wasteful number, since it uses less digits than its factorization.

77051228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 77051228 is about 8777.8828882596. The cubic root of 77051228 is about 425.5264120679.

It can be divided in two parts, 77051 and 228, that multiplied together give a triangular number (17567628 = T₅₉₂₇).

The spelling of 77051228 in words is "seventy-seven million, fifty-one thousand, two hundred twenty-eight".