40207090 has 96 divisors (see below), whose sum is σ = 93768192. Its totient is φ = 12144000.

The previous prime is 40207061. The next prime is 40207117. The reversal of 40207090 is 9070204.

It is a super-2 number, since 2×40207090² = 3233220172536200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 398040 + ... + 398140.

It is an arithmetic number, because the mean of its divisors is an integer number (976752).

Almost surely, 2^40207090 is an apocalyptic number.

40207090 is an abundant number, since it is smaller than the sum of its proper divisors (53561102).

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

40207090 is a wasteful number, since it uses less digits than its factorization.

40207090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 40207090 is about 6340.9060866725. The cubic root of 40207090 is about 342.5843719183.

Adding to 40207090 its reverse (9070204), we get a palindrome (49277294).

The spelling of 40207090 in words is "forty million, two hundred seven thousand, ninety".