40137020 has 96 divisors (see below), whose sum is σ = 106928640. Its totient is φ = 12291840.

The previous prime is 40136989. The next prime is 40137049. The reversal of 40137020 is 2073104.

It is a happy number.

It is a super-2 number, since 2×40137020² = 3221960748960800, 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 40137020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102986 + ... + 103374.

It is an arithmetic number, because the mean of its divisors is an integer number (1113840).

Almost surely, 2^40137020 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 40137020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53464320).

40137020 is an abundant number, since it is smaller than the sum of its proper divisors (66791620).

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

40137020 is a wasteful number, since it uses less digits than its factorization.

40137020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 40137020 is about 6335.3784417350. The cubic root of 40137020 is about 342.3852458013.

The spelling of 40137020 in words is "forty million, one hundred thirty-seven thousand, twenty".