47045988 has 72 divisors (see below), whose sum is σ = 133731360. Its totient is φ = 14184720.

The previous prime is 47045963. The next prime is 47046011. The reversal of 47045988 is 88954074.

It is a super-2 number, since 2×47045988² = 4426649973792288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236313 + ... + 236511.

It is an arithmetic number, because the mean of its divisors is an integer number (1857380).

Almost surely, 2^47045988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47045988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66865680).

47045988 is an abundant number, since it is smaller than the sum of its proper divisors (86685372).

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

47045988 is a wasteful number, since it uses less digits than its factorization.

47045988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 47045988 is about 6859.0077999664. The cubic root of 47045988 is about 361.0002736830. Note that the first 3 decimals are identical.

The spelling of 47045988 in words is "forty-seven million, forty-five thousand, nine hundred eighty-eight".