772752020 has 12 divisors (see below), whose sum is σ = 1622779284. Its totient is φ = 309100800.

The previous prime is 772751989. The next prime is 772752037. The reversal of 772752020 is 20257277.

It can be written as a sum of positive squares in 2 ways, for example, as 500237956 + 272514064 = 22366^2 + 16508^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19318781 + ... + 19318820.

It is an arithmetic number, because the mean of its divisors is an integer number (135231607).

Almost surely, 2^772752020 is an apocalyptic number.

It is an amenable number.

772752020 is an abundant number, since it is smaller than the sum of its proper divisors (850027264).

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

772752020 is a wasteful number, since it uses less digits than its factorization.

772752020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38637610 (or 38637608 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 772752020 is about 27798.4175808624. The cubic root of 772752020 is about 917.6562981902.

The spelling of 772752020 in words is "seven hundred seventy-two million, seven hundred fifty-two thousand, twenty".