77623928 has 32 divisors (see below), whose sum is σ = 150370560. Its totient is φ = 37537920.

The previous prime is 77623927. The next prime is 77623933. The reversal of 77623928 is 82932677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77623927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55850 + ... + 57222.

It is an arithmetic number, because the mean of its divisors is an integer number (4699080).

Almost surely, 2^77623928 is an apocalyptic number.

It is an amenable number.

77623928 is a deficient number, since it is larger than the sum of its proper divisors (72746632).

77623928 is a wasteful number, since it uses less digits than its factorization.

77623928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607 (or 1603 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 77623928 is about 8810.4442566763. Note that the first 3 decimals coincide. The cubic root of 77623928 is about 426.5780832808.

It can be divided in two parts, 7762392 and 8, that multiplied together give a cube (62099136 = 396³).

The spelling of 77623928 in words is "seventy-seven million, six hundred twenty-three thousand, nine hundred twenty-eight".