47185902 has 20 divisors (see below), whose sum is σ = 105731736. Its totient is φ = 15728580.

The previous prime is 47185877. The next prime is 47185907. The reversal of 47185902 is 20958174.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47185907) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 145474 + ... + 145797.

Almost surely, 2^47185902 is an apocalyptic number.

47185902 is an abundant number, since it is smaller than the sum of its proper divisors (58545834).

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

47185902 is a wasteful number, since it uses less digits than its factorization.

47185902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291285 (or 291276 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 47185902 is about 6869.1995166831. The cubic root of 47185902 is about 361.3577891413.

The spelling of 47185902 in words is "forty-seven million, one hundred eighty-five thousand, nine hundred two".