47820690 has 48 divisors (see below), whose sum is σ = 124675200. Its totient is φ = 12717216.

The previous prime is 47820683. The next prime is 47820697. The reversal of 47820690 is 9602874.

It is an interprime number because it is at equal distance from previous prime (47820683) and next prime (47820697).

It is a super-2 number, since 2×47820690² = 4573636784152200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47820697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64341 + ... + 65079.

It is an arithmetic number, because the mean of its divisors is an integer number (2597400).

Almost surely, 2^47820690 is an apocalyptic number.

47820690 is an abundant number, since it is smaller than the sum of its proper divisors (76854510).

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

47820690 is a wasteful number, since it uses less digits than its factorization.

47820690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 47820690 is about 6915.2505377607. The cubic root of 47820690 is about 362.9710151481.

The spelling of 47820690 in words is "forty-seven million, eight hundred twenty thousand, six hundred ninety".