47207440 has 40 divisors (see below), whose sum is σ = 125438400. Its totient is φ = 16185216.

The previous prime is 47207429. The next prime is 47207467. The reversal of 47207440 is 4470274.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 47207399 and 47207408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41590 + ... + 42709.

It is an arithmetic number, because the mean of its divisors is an integer number (3135960).

Almost surely, 2^47207440 is an apocalyptic number.

47207440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47207440 is an abundant number, since it is smaller than the sum of its proper divisors (78230960).

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

47207440 is a wasteful number, since it uses less digits than its factorization.

47207440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84319 (or 84313 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 47207440 is about 6870.7670605253. The cubic root of 47207440 is about 361.4127613530.

The spelling of 47207440 in words is "forty-seven million, two hundred seven thousand, four hundred forty".