40501604 has 72 divisors (see below), whose sum is σ = 86493624. Its totient is φ = 16473600.

The previous prime is 40501579. The next prime is 40501609. The reversal of 40501604 is 40610504.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1464100 + 39037504 = 1210^2 + 6248^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40501609) 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, 257894 + ... + 258050.

Almost surely, 2^40501604 is an apocalyptic number.

40501604 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40501604 is an abundant number, since it is smaller than the sum of its proper divisors (45992020).

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

40501604 is a wasteful number, since it uses less digits than its factorization.

40501604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40501604 is about 6364.0870515731. The cubic root of 40501604 is about 343.4188063398.

Subtracting 40501604 from its reverse (40610504), we obtain a square (108900 = 330²).

The spelling of 40501604 in words is "forty million, five hundred one thousand, six hundred four".