40104432 has 30 divisors (see below), whose sum is σ = 112237112. Its totient is φ = 13368096.

The previous prime is 40104431. The next prime is 40104443. The reversal of 40104432 is 23440104.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40104431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139108 + ... + 139395.

Almost surely, 2^40104432 is an apocalyptic number.

It is an amenable number.

40104432 is an abundant number, since it is smaller than the sum of its proper divisors (72132680).

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

40104432 is a wasteful number, since it uses less digits than its factorization.

40104432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278517 (or 278508 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40104432 is about 6332.8060131351. The cubic root of 40104432 is about 342.2925577089.

Adding to 40104432 its reverse (23440104), we get a palindrome (63544536).

The spelling of 40104432 in words is "forty million, one hundred four thousand, four hundred thirty-two".