461156820 has 48 divisors (see below), whose sum is σ = 1292372928. Its totient is φ = 122867200.

The previous prime is 461156791. The next prime is 461156827. The reversal of 461156820 is 28651164.

It is a super-2 number, since 2×461156820² = 425331225265024800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461156827) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 84412 + ... + 89708.

It is an arithmetic number, because the mean of its divisors is an integer number (26924436).

Almost surely, 2^461156820 is an apocalyptic number.

It is an amenable number.

461156820 is an abundant number, since it is smaller than the sum of its proper divisors (831216108).

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

461156820 is a wasteful number, since it uses less digits than its factorization.

461156820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760 (or 6758 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 461156820 is about 21474.5621608451. The cubic root of 461156820 is about 772.5908230999.

The spelling of 461156820 in words is "four hundred sixty-one million, one hundred fifty-six thousand, eight hundred twenty".