40636992 has 112 divisors (see below), whose sum is σ = 119384064. Its totient is φ = 12096000.

The previous prime is 40636979. The next prime is 40636997. The reversal of 40636992 is 29963604.

It is a happy number.

It is a super-3 number, since 3×40636992³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40636992.

It is not an unprimeable number, because it can be changed into a prime (40636997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149817 + ... + 150087.

Almost surely, 2^40636992 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 40636992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59692032).

40636992 is an abundant number, since it is smaller than the sum of its proper divisors (78747072).

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

40636992 is a wasteful number, since it uses less digits than its factorization.

40636992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 40636992 is about 6374.7150524553. The cubic root of 40636992 is about 343.8010387246.

The spelling of 40636992 in words is "forty million, six hundred thirty-six thousand, nine hundred ninety-two".