47938240 has 56 divisors (see below), whose sum is σ = 130466592. Its totient is φ = 16435200.

The previous prime is 47938211. The next prime is 47938243. The reversal of 47938240 is 4283974.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 47938240.

It is not an unprimeable number, because it can be changed into a prime (47938243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8461 + ... + 12940.

Almost surely, 2^47938240 is an apocalyptic number.

47938240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47938240 is an abundant number, since it is smaller than the sum of its proper divisors (82528352).

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

47938240 is a wasteful number, since it uses less digits than its factorization.

47938240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21425 (or 21415 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 47938240 is about 6923.7446515596. The cubic root of 47938240 is about 363.2681831019.

The spelling of 47938240 in words is "forty-seven million, nine hundred thirty-eight thousand, two hundred forty".