47681520 has 40 divisors (see below), whose sum is σ = 147813456. Its totient is φ = 12715008.

The previous prime is 47681519. The next prime is 47681521. The reversal of 47681520 is 2518674.

It is an interprime number because it is at equal distance from previous prime (47681519) and next prime (47681521).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47681521) 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, 99097 + ... + 99576.

Almost surely, 2^47681520 is an apocalyptic number.

47681520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47681520 is an abundant number, since it is smaller than the sum of its proper divisors (100131936).

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

47681520 is a wasteful number, since it uses less digits than its factorization.

47681520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198689 (or 198683 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 47681520 is about 6905.1806638205. The cubic root of 47681520 is about 362.6185612977.

The spelling of 47681520 in words is "forty-seven million, six hundred eighty-one thousand, five hundred twenty".