47478520 has 16 divisors (see below), whose sum is σ = 106826760. Its totient is φ = 18991392.

The previous prime is 47478517. The next prime is 47478521. The reversal of 47478520 is 2587474.

It is a super-2 number, since 2×47478520² = 4508419722780800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47478520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47478521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593442 + ... + 593521.

Almost surely, 2^47478520 is an apocalyptic number.

47478520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47478520 is an abundant number, since it is smaller than the sum of its proper divisors (59348240).

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

47478520 is a wasteful number, since it uses less digits than its factorization.

47478520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186974 (or 1186970 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 47478520 is about 6890.4658768475. The cubic root of 47478520 is about 362.1032234148.

The spelling of 47478520 in words is "forty-seven million, four hundred seventy-eight thousand, five hundred twenty".