47086740 has 36 divisors (see below), whose sum is σ = 142830324. Its totient is φ = 12556416.

The previous prime is 47086709. The next prime is 47086747. The reversal of 47086740 is 4768074.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20088324 + 26998416 = 4482^2 + 5196^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×47086740² = 4434322167655200, which contains 22 as substring.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47086695 and 47086704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47086747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130617 + ... + 130976.

It is an arithmetic number, because the mean of its divisors is an integer number (3967509).

Almost surely, 2^47086740 is an apocalyptic number.

It is an amenable number.

47086740 is an abundant number, since it is smaller than the sum of its proper divisors (95743584).

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

47086740 is a wasteful number, since it uses less digits than its factorization.

47086740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261608 (or 261603 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 47086740 is about 6861.9778489879. The cubic root of 47086740 is about 361.1044783704.

The spelling of 47086740 in words is "forty-seven million, eighty-six thousand, seven hundred forty".