761142780 has 72 divisors (see below), whose sum is σ = 2343296592. Its totient is φ = 199938816.

The previous prime is 761142761. The next prime is 761142797. The reversal of 761142780 is 87241167.

It is a super-2 number, since 2×761142780² = 1158676663092256800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19497 + ... + 43616.

It is an arithmetic number, because the mean of its divisors is an integer number (32545786).

Almost surely, 2^761142780 is an apocalyptic number.

It is an amenable number.

761142780 is an abundant number, since it is smaller than the sum of its proper divisors (1582153812).

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

761142780 is a wasteful number, since it uses less digits than its factorization.

761142780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63195 (or 63190 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 761142780 is about 27588.8162123713. The cubic root of 761142780 is about 913.0377009809.

The spelling of 761142780 in words is "seven hundred sixty-one million, one hundred forty-two thousand, seven hundred eighty".