40621590 has 48 divisors (see below), whose sum is σ = 105932736. Its totient is φ = 10800000.

The previous prime is 40621577. The next prime is 40621613. The reversal of 40621590 is 9512604.

It is a super-2 number, since 2×40621590² = 3300227148256200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53715 + ... + 54465.

It is an arithmetic number, because the mean of its divisors is an integer number (2206932).

Almost surely, 2^40621590 is an apocalyptic number.

40621590 is an abundant number, since it is smaller than the sum of its proper divisors (65311146).

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

40621590 is a wasteful number, since it uses less digits than its factorization.

40621590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 40621590 is about 6373.5068839690. The cubic root of 40621590 is about 343.7575980690.

The spelling of 40621590 in words is "forty million, six hundred twenty-one thousand, five hundred ninety".