40251204 has 72 divisors (see below), whose sum is σ = 116986688. Its totient is φ = 11430720.

The previous prime is 40251187. The next prime is 40251209. The reversal of 40251204 is 40215204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40251209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52794 + ... + 53550.

Almost surely, 2^40251204 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 40251204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58493344).

40251204 is an abundant number, since it is smaller than the sum of its proper divisors (76735484).

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

40251204 is a wasteful number, since it uses less digits than its factorization.

40251204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40251204 is about 6344.3836580081. The cubic root of 40251204 is about 342.7096171860.

Adding to 40251204 its reverse (40215204), we get a palindrome (80466408).

The spelling of 40251204 in words is "forty million, two hundred fifty-one thousand, two hundred four".