47640244 has 12 divisors (see below), whose sum is σ = 83736100. Its totient is φ = 23715648.

The previous prime is 47640233. The next prime is 47640251. The reversal of 47640244 is 44204674.

It can be written as a sum of positive squares in 2 ways, for example, as 46512400 + 1127844 = 6820^2 + 1062^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25089 + ... + 26920.

Almost surely, 2^47640244 is an apocalyptic number.

It is an amenable number.

47640244 is a deficient number, since it is larger than the sum of its proper divisors (36095856).

47640244 is a wasteful number, since it uses less digits than its factorization.

47640244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52242 (or 52240 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 47640244 is about 6902.1912462638. The cubic root of 47640244 is about 362.5138962568.

The spelling of 47640244 in words is "forty-seven million, six hundred forty thousand, two hundred forty-four".