40072336 has 40 divisors (see below), whose sum is σ = 80780544. Its totient is φ = 19236480.

The previous prime is 40072327. The next prime is 40072337. The reversal of 40072336 is 63327004.

It is a super-2 number, since 2×40072336² = 3211584224993792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40072336.

It is not an unprimeable number, because it can be changed into a prime (40072337) by changing a digit.

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, 85575 + ... + 86041.

Almost surely, 2^40072336 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 40072336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40390272).

40072336 is an abundant number, since it is smaller than the sum of its proper divisors (40708208).

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

40072336 is a wasteful number, since it uses less digits than its factorization.

40072336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 40072336 is about 6330.2714001850. The cubic root of 40072336 is about 342.2012198901.

The spelling of 40072336 in words is "forty million, seventy-two thousand, three hundred thirty-six".