464644136 has 32 divisors (see below), whose sum is σ = 1006318080. Its totient is φ = 198777600.

The previous prime is 464644121. The next prime is 464644139. The reversal of 464644136 is 631446464.

464644136 = 5220² + 5221² + ... + 5236².

It is a self number, because there is not a number n which added to its sum of digits gives 464644136.

It is not an unprimeable number, because it can be changed into a prime (464644139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153800 + ... + 156791.

It is an arithmetic number, because the mean of its divisors is an integer number (31447440).

Almost surely, 2^464644136 is an apocalyptic number.

It is an amenable number.

464644136 is an abundant number, since it is smaller than the sum of its proper divisors (541673944).

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

464644136 is a wasteful number, since it uses less digits than its factorization.

464644136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310625 (or 310621 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

The square root of 464644136 is about 21555.6056746267. The cubic root of 464644136 is about 774.5334054386.

The spelling of 464644136 in words is "four hundred sixty-four million, six hundred forty-four thousand, one hundred thirty-six".