77291048 has 16 divisors (see below), whose sum is σ = 146028960. Its totient is φ = 38350000.

The previous prime is 77291041. The next prime is 77291099. The reversal of 77291048 is 84019277.

It is a super-2 number, since 2×77291048² = 11947812201876608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77291041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35828 + ... + 37923.

It is an arithmetic number, because the mean of its divisors is an integer number (9126810).

Almost surely, 2^77291048 is an apocalyptic number.

It is an amenable number.

77291048 is a deficient number, since it is larger than the sum of its proper divisors (68737912).

77291048 is a wasteful number, since it uses less digits than its factorization.

77291048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73888 (or 73884 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 77291048 is about 8791.5327446356. The cubic root of 77291048 is about 425.9674348945.

The spelling of 77291048 in words is "seventy-seven million, two hundred ninety-one thousand, forty-eight".