47270640 has 40 divisors (see below), whose sum is σ = 146539728. Its totient is φ = 12605440.

The previous prime is 47270611. The next prime is 47270683. The reversal of 47270640 is 4607274.

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

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 = 47270598 and 47270607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98241 + ... + 98720.

Almost surely, 2^47270640 is an apocalyptic number.

47270640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47270640 is an abundant number, since it is smaller than the sum of its proper divisors (99269088).

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

47270640 is a wasteful number, since it uses less digits than its factorization.

47270640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196977 (or 196971 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 47270640 is about 6875.3647175986. The cubic root of 47270640 is about 361.5739725308.

The spelling of 47270640 in words is "forty-seven million, two hundred seventy thousand, six hundred forty".