47731630 has 32 divisors (see below), whose sum is σ = 89579520. Its totient is φ = 18291360.

The previous prime is 47731613. The next prime is 47731633. The reversal of 47731630 is 3613774.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 47731592 and 47731601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47731633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32451 + ... + 33889.

It is an arithmetic number, because the mean of its divisors is an integer number (2799360).

Almost surely, 2^47731630 is an apocalyptic number.

47731630 is a deficient number, since it is larger than the sum of its proper divisors (41847890).

47731630 is a wasteful number, since it uses less digits than its factorization.

47731630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 47731630 is about 6908.8081461277. The cubic root of 47731630 is about 362.7455458849.

The spelling of 47731630 in words is "forty-seven million, seven hundred thirty-one thousand, six hundred thirty".