47637440 has 28 divisors (see below), whose sum is σ = 113437416. Its totient is φ = 19054848.

The previous prime is 47637431. The next prime is 47637481. The reversal of 47637440 is 4473674.

47637440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 47637440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74114 + ... + 74753.

Almost surely, 2^47637440 is an apocalyptic number.

47637440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47637440 is an abundant number, since it is smaller than the sum of its proper divisors (65799976).

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

47637440 is a wasteful number, since it uses less digits than its factorization.

47637440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148884 (or 148874 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 47637440 is about 6901.9881193755. The cubic root of 47637440 is about 362.5067838604.

The spelling of 47637440 in words is "forty-seven million, six hundred thirty-seven thousand, four hundred forty".