40520464 has 40 divisors (see below), whose sum is σ = 84682080. Its totient is φ = 18720000.

The previous prime is 40520449. The next prime is 40520477. The reversal of 40520464 is 46402504.

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, 10839 + ... + 14089.

It is an arithmetic number, because the mean of its divisors is an integer number (2117052).

Almost surely, 2^40520464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40520464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42341040).

40520464 is an abundant number, since it is smaller than the sum of its proper divisors (44161616).

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

40520464 is a wasteful number, since it uses less digits than its factorization.

40520464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319 (or 3313 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 40520464 is about 6365.5686313165. The cubic root of 40520464 is about 343.4721036002.

Adding to 40520464 its reverse (46402504), we get a palindrome (86922968).

The spelling of 40520464 in words is "forty million, five hundred twenty thousand, four hundred sixty-four".