77285948 has 24 divisors (see below), whose sum is σ = 137544960. Its totient is φ = 37992240.

The previous prime is 77285941. The next prime is 77285981. The reversal of 77285948 is 84958277.

It is a junction number, because it is equal to n+sod(n) for n = 77285896 and 77285905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77285941) 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 7 ways as a sum of consecutive naturals, for example, 89543 + ... + 90401.

It is an arithmetic number, because the mean of its divisors is an integer number (5731040).

Almost surely, 2^77285948 is an apocalyptic number.

It is an amenable number.

77285948 is a deficient number, since it is larger than the sum of its proper divisors (60259012).

77285948 is a wasteful number, since it uses less digits than its factorization.

77285948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217 (or 1215 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 50.

The square root of 77285948 is about 8791.2426880390. The cubic root of 77285948 is about 425.9580656262.

The spelling of 77285948 in words is "seventy-seven million, two hundred eighty-five thousand, nine hundred forty-eight".