47681040 has 80 divisors (see below), whose sum is σ = 161257536. Its totient is φ = 11558400.

The previous prime is 47681021. The next prime is 47681059. The reversal of 47681040 is 4018674.

It is an interprime number because it is at equal distance from previous prime (47681021) and next prime (47681059).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 47680989 and 47681007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6391 + ... + 11670.

Almost surely, 2^47681040 is an apocalyptic number.

47681040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47681040 is an abundant number, since it is smaller than the sum of its proper divisors (113576496).

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

47681040 is a wasteful number, since it uses less digits than its factorization.

47681040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18088 (or 18082 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 47681040 is about 6905.1459072202. The cubic root of 47681040 is about 362.6173444916.

The spelling of 47681040 in words is "forty-seven million, six hundred eighty-one thousand, forty".