47700840 has 64 divisors (see below), whose sum is σ = 156116160. Its totient is φ = 11563520.

The previous prime is 47700823. The next prime is 47700931. The reversal of 47700840 is 4800774.

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 = 47700798 and 47700807.

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, 16749 + ... + 19388.

It is an arithmetic number, because the mean of its divisors is an integer number (2439315).

Almost surely, 2^47700840 is an apocalyptic number.

47700840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47700840 is an abundant number, since it is smaller than the sum of its proper divisors (108415320).

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

47700840 is a wasteful number, since it uses less digits than its factorization.

47700840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36162 (or 36158 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 47700840 is about 6906.5794717791. The cubic root of 47700840 is about 362.6675309656.

The spelling of 47700840 in words is "forty-seven million, seven hundred thousand, eight hundred forty".