47997290 has 32 divisors (see below), whose sum is σ = 99797184. Its totient is φ = 16426240.

The previous prime is 47997289. The next prime is 47997337. The reversal of 47997290 is 9279974.

47997290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10964 + ... + 14703.

It is an arithmetic number, because the mean of its divisors is an integer number (3118662).

Almost surely, 2^47997290 is an apocalyptic number.

47997290 is an abundant number, since it is smaller than the sum of its proper divisors (51799894).

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

47997290 is a wasteful number, since it uses less digits than its factorization.

47997290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25702.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 47997290 is about 6928.0076501112. The cubic root of 47997290 is about 363.4172789977.

The spelling of 47997290 in words is "forty-seven million, nine hundred ninety-seven thousand, two hundred ninety".