772345780 has 24 divisors (see below), whose sum is σ = 1674247680. Its totient is φ = 298972320.

The previous prime is 772345729. The next prime is 772345787. The reversal of 772345780 is 87543277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772345787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622240 + ... + 623479.

It is an arithmetic number, because the mean of its divisors is an integer number (69760320).

Almost surely, 2^772345780 is an apocalyptic number.

It is an amenable number.

772345780 is an abundant number, since it is smaller than the sum of its proper divisors (901901900).

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

772345780 is a wasteful number, since it uses less digits than its factorization.

772345780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245759 (or 1245757 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 43.

The square root of 772345780 is about 27791.1097295520. The cubic root of 772345780 is about 917.4954643436.

The spelling of 772345780 in words is "seven hundred seventy-two million, three hundred forty-five thousand, seven hundred eighty".