771442252 has 24 divisors (see below), whose sum is σ = 1633643424. Its totient is φ = 311169792.

The previous prime is 771442249. The next prime is 771442271. The reversal of 771442252 is 252244177.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809863 + ... + 810814.

It is an arithmetic number, because the mean of its divisors is an integer number (68068476).

Almost surely, 2^771442252 is an apocalyptic number.

It is an amenable number.

771442252 is an abundant number, since it is smaller than the sum of its proper divisors (862201172).

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

771442252 is a wasteful number, since it uses less digits than its factorization.

771442252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620705 (or 1620703 counting only the distinct ones).

The product of its digits is 31360, while the sum is 34.

The square root of 771442252 is about 27774.8492705181. The cubic root of 771442252 is about 917.1375476629.

The spelling of 771442252 in words is "seven hundred seventy-one million, four hundred forty-two thousand, two hundred fifty-two".