40644480 has 64 divisors (see below), whose sum is σ = 129560400. Its totient is φ = 10838016.

The previous prime is 40644469. The next prime is 40644491. The reversal of 40644480 is 8444604.

It is an interprime number because it is at equal distance from previous prime (40644469) and next prime (40644491).

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8665 + ... + 12504.

Almost surely, 2^40644480 is an apocalyptic number.

40644480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40644480 is an abundant number, since it is smaller than the sum of its proper divisors (88915920).

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

40644480 is a wasteful number, since it uses less digits than its factorization.

40644480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21191 (or 21179 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 40644480 is about 6375.3023457715. The cubic root of 40644480 is about 343.8221543301.

The spelling of 40644480 in words is "forty million, six hundred forty-four thousand, four hundred eighty".