77256748 has 6 divisors (see below), whose sum is σ = 135199316. Its totient is φ = 38628372.

The previous prime is 77256737. The next prime is 77256749. The reversal of 77256748 is 84765277.

It is a super-2 number, since 2×77256748² = 11937210223071008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77256698 and 77256707.

It is not an unprimeable number, because it can be changed into a prime (77256749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9657090 + ... + 9657097.

Almost surely, 2^77256748 is an apocalyptic number.

It is an amenable number.

77256748 is a deficient number, since it is larger than the sum of its proper divisors (57942568).

77256748 is a wasteful number, since it uses less digits than its factorization.

77256748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19314191 (or 19314189 counting only the distinct ones).

The product of its digits is 658560, while the sum is 46.

The square root of 77256748 is about 8789.5817875483. The cubic root of 77256748 is about 425.9044140349.

The spelling of 77256748 in words is "seventy-seven million, two hundred fifty-six thousand, seven hundred forty-eight".