47957440 has 28 divisors (see below), whose sum is σ = 114199416. Its totient is φ = 19182848.

The previous prime is 47957431. The next prime is 47957453. The reversal of 47957440 is 4475974.

47957440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 47957393 and 47957402.

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, 74614 + ... + 75253.

Almost surely, 2^47957440 is an apocalyptic number.

47957440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47957440 is an abundant number, since it is smaller than the sum of its proper divisors (66241976).

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

47957440 is a wasteful number, since it uses less digits than its factorization.

47957440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149884 (or 149874 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 47957440 is about 6925.1310456915. The cubic root of 47957440 is about 363.3166747873.

The spelling of 47957440 in words is "forty-seven million, nine hundred fifty-seven thousand, four hundred forty".