40189700 has 72 divisors (see below), whose sum is σ = 94493952. Its totient is φ = 14778880.

The previous prime is 40189697. The next prime is 40189711. The reversal of 40189700 is 798104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79649 + ... + 80151.

It is an arithmetic number, because the mean of its divisors is an integer number (1312416).

Almost surely, 2^40189700 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 40189700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47246976).

40189700 is an abundant number, since it is smaller than the sum of its proper divisors (54304252).

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

40189700 is a wasteful number, since it uses less digits than its factorization.

40189700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 40189700 is about 6339.5346832398. The cubic root of 40189700 is about 342.5349743176.

The spelling of 40189700 in words is "forty million, one hundred eighty-nine thousand, seven hundred".