47945520 has 300 divisors, whose sum is σ = 194991984. Its totient is φ = 10886400.

The previous prime is 47945507. The next prime is 47945537. The reversal of 47945520 is 2554974.

47945520 is a `hidden beast` number, since 47 + 94 + 5 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 317445 + ... + 317595.

Almost surely, 2^47945520 is an apocalyptic number.

47945520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47945520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97495992).

47945520 is an abundant number, since it is smaller than the sum of its proper divisors (147046464).

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

47945520 is a wasteful number, since it uses less digits than its factorization.

47945520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 47945520 is about 6924.2703586732. The cubic root of 47945520 is about 363.2865710563.

The spelling of 47945520 in words is "forty-seven million, nine hundred forty-five thousand, five hundred twenty".