47681690 has 16 divisors (see below), whose sum is σ = 98088192. Its totient is φ = 16347984.

The previous prime is 47681681. The next prime is 47681701. The reversal of 47681690 is 9618674.

47681690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×47681690² = 4547087122512200, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 340514 + ... + 340653.

It is an arithmetic number, because the mean of its divisors is an integer number (6130512).

Almost surely, 2^47681690 is an apocalyptic number.

47681690 is an abundant number, since it is smaller than the sum of its proper divisors (50406502).

47681690 is a wasteful number, since it uses less digits than its factorization.

47681690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681181.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 47681690 is about 6905.1929734078. The cubic root of 47681690 is about 362.6189922479.

The spelling of 47681690 in words is "forty-seven million, six hundred eighty-one thousand, six hundred ninety".