772623144 has 64 divisors (see below), whose sum is σ = 2259144000. Its totient is φ = 243984960.

The previous prime is 772623143. The next prime is 772623161. The reversal of 772623144 is 441326277.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 772623099 and 772623108.

It is not an unprimeable number, because it can be changed into a prime (772623143) 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 15 ways as a sum of consecutive naturals, for example, 90027 + ... + 98234.

It is an arithmetic number, because the mean of its divisors is an integer number (35299125).

Almost surely, 2^772623144 is an apocalyptic number.

It is an amenable number.

772623144 is an abundant number, since it is smaller than the sum of its proper divisors (1486520856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

772623144 is a wasteful number, since it uses less digits than its factorization.

772623144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188295 (or 188285 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 772623144 is about 27796.0994385903. The cubic root of 772623144 is about 917.6052811993.

The spelling of 772623144 in words is "seven hundred seventy-two million, six hundred twenty-three thousand, one hundred forty-four".