47020731 has 4 divisors (see below), whose sum is σ = 62694312. Its totient is φ = 31347152.

The previous prime is 47020709. The next prime is 47020741. The reversal of 47020731 is 13702074.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47020731 - 2²³ = 38632123 is a prime.

It is a super-2 number, since 2×47020731² = 4421898287548722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47020741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7836786 + ... + 7836791.

It is an arithmetic number, because the mean of its divisors is an integer number (15673578).

Almost surely, 2^47020731 is an apocalyptic number.

47020731 is a deficient number, since it is larger than the sum of its proper divisors (15673581).

47020731 is a wasteful number, since it uses less digits than its factorization.

47020731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15673580.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 47020731 is about 6857.1663972810. The cubic root of 47020731 is about 360.9356601956.

It can be divided in two parts, 4702073 and 1, that added together give a palindrome (4702074).

The spelling of 47020731 in words is "forty-seven million, twenty thousand, seven hundred thirty-one".