461213720 has 32 divisors (see below), whose sum is σ = 1132071120. Its totient is φ = 167713920.

The previous prime is 461213713. The next prime is 461213749. The reversal of 461213720 is 27312164.

It is a self number, because there is not a number n which added to its sum of digits gives 461213720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523667 + ... + 524546.

Almost surely, 2^461213720 is an apocalyptic number.

461213720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

461213720 is an abundant number, since it is smaller than the sum of its proper divisors (670857400).

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

461213720 is a wasteful number, since it uses less digits than its factorization.

461213720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048235 (or 1048231 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 461213720 is about 21475.8869432673. The cubic root of 461213720 is about 772.6225972586.

Adding to 461213720 its reverse (27312164), we get a palindrome (488525884).

The spelling of 461213720 in words is "four hundred sixty-one million, two hundred thirteen thousand, seven hundred twenty".