40501988 has 12 divisors (see below), whose sum is σ = 73960320. Its totient is φ = 19370472.

The previous prime is 40501963. The next prime is 40502003. The reversal of 40501988 is 88910504.

It is a super-2 number, since 2×40501988² = 3280822063904288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220028 + ... + 220211.

It is an arithmetic number, because the mean of its divisors is an integer number (6163360).

Almost surely, 2^40501988 is an apocalyptic number.

It is an amenable number.

40501988 is a deficient number, since it is larger than the sum of its proper divisors (33458332).

40501988 is a wasteful number, since it uses less digits than its factorization.

40501988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440266 (or 440264 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 40501988 is about 6364.1172207935. The cubic root of 40501988 is about 343.4198916664.

The spelling of 40501988 in words is "forty million, five hundred one thousand, nine hundred eighty-eight".