47620640 has 24 divisors (see below), whose sum is σ = 112504140. Its totient is φ = 19048192.

The previous prime is 47620637. The next prime is 47620673. The reversal of 47620640 is 4602674.

It can be written as a sum of positive squares in 2 ways, for example, as 45535504 + 2085136 = 6748^2 + 1444^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148655 + ... + 148974.

Almost surely, 2^47620640 is an apocalyptic number.

47620640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47620640 is an abundant number, since it is smaller than the sum of its proper divisors (64883500).

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

47620640 is a wasteful number, since it uses less digits than its factorization.

47620640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297644 (or 297636 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 47620640 is about 6900.7709714205. The cubic root of 47620640 is about 362.4641645114.

The spelling of 47620640 in words is "forty-seven million, six hundred twenty thousand, six hundred forty".