40640562 has 16 divisors (see below), whose sum is σ = 90312480. Its totient is φ = 13546836.

The previous prime is 40640543. The next prime is 40640569. The reversal of 40640562 is 26504604.

It is a happy number.

40640562 is a `hidden beast` number, since 40 + 64 + 0 + 562 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40640569) 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, 376248 + ... + 376355.

It is an arithmetic number, because the mean of its divisors is an integer number (5644530).

Almost surely, 2^40640562 is an apocalyptic number.

40640562 is an abundant number, since it is smaller than the sum of its proper divisors (49671918).

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

40640562 is a wasteful number, since it uses less digits than its factorization.

40640562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752614 (or 752608 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 40640562 is about 6374.9950588216. The cubic root of 40640562 is about 343.8111061837.

The spelling of 40640562 in words is "forty million, six hundred forty thousand, five hundred sixty-two".