40621568 has 80 divisors (see below), whose sum is σ = 92806560. Its totient is φ = 17596416.

The previous prime is 40621549. The next prime is 40621571. The reversal of 40621568 is 86512604.

It is a super-2 number, since 2×40621568² = 3300223573557248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112973 + ... + 113331.

It is an arithmetic number, because the mean of its divisors is an integer number (1160082).

Almost surely, 2^40621568 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 40621568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46403280).

40621568 is an abundant number, since it is smaller than the sum of its proper divisors (52184992).

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

40621568 is a wasteful number, since it uses less digits than its factorization.

40621568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 40621568 is about 6373.5051580743. The cubic root of 40621568 is about 343.7575360111.

The spelling of 40621568 in words is "forty million, six hundred twenty-one thousand, five hundred sixty-eight".