772374280 has 32 divisors (see below), whose sum is σ = 1749519000. Its totient is φ = 306873856.

The previous prime is 772374271. The next prime is 772374287. The reversal of 772374280 is 82473277.

It can be written as a sum of positive squares in 4 ways, for example, as 345290724 + 427083556 = 18582^2 + 20666^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (772374287) 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, 58837 + ... + 70756.

Almost surely, 2^772374280 is an apocalyptic number.

It is an amenable number.

772374280 is an abundant number, since it is smaller than the sum of its proper divisors (977144720).

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

772374280 is a wasteful number, since it uses less digits than its factorization.

772374280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129753 (or 129749 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 772374280 is about 27791.6224787255. The cubic root of 772374280 is about 917.5067495736.

The spelling of 772374280 in words is "seven hundred seventy-two million, three hundred seventy-four thousand, two hundred eighty".