40100436 has 36 divisors (see below), whose sum is σ = 103282452. Its totient is φ = 13113984.

The previous prime is 40100387. The next prime is 40100441. The reversal of 40100436 is 63400104.

It can be written as a sum of positive squares in 2 ways, for example, as 9960336 + 30140100 = 3156^2 + 5490^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

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, 8601 + ... + 12416.

It is an arithmetic number, because the mean of its divisors is an integer number (2868957).

Almost surely, 2^40100436 is an apocalyptic number.

It is an amenable number.

40100436 is an abundant number, since it is smaller than the sum of its proper divisors (63182016).

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

40100436 is a wasteful number, since it uses less digits than its factorization.

40100436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21080 (or 21075 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40100436 is about 6332.4905053225. The cubic root of 40100436 is about 342.2811886705.

The spelling of 40100436 in words is "forty million, one hundred thousand, four hundred thirty-six".