40507900 has 36 divisors (see below), whose sum is σ = 89572392. Its totient is φ = 15895360.

The previous prime is 40507897. The next prime is 40507913. The reversal of 40507900 is 970504.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1479 + ... + 9121.

It is an arithmetic number, because the mean of its divisors is an integer number (2488122).

Almost surely, 2^40507900 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 40507900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44786196).

40507900 is an abundant number, since it is smaller than the sum of its proper divisors (49064492).

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

40507900 is a wasteful number, since it uses less digits than its factorization.

40507900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710 (or 7703 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 40507900 is about 6364.5816830331. The cubic root of 40507900 is about 343.4366003082.

The spelling of 40507900 in words is "forty million, five hundred seven thousand, nine hundred".