47145732 has 12 divisors (see below), whose sum is σ = 110006736. Its totient is φ = 15715240.

The previous prime is 47145731. The next prime is 47145737. The reversal of 47145732 is 23754174.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 47145693 and 47145702.

It is not an unprimeable number, because it can be changed into a prime (47145731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964394 + ... + 1964417.

It is an arithmetic number, because the mean of its divisors is an integer number (9167228).

Almost surely, 2^47145732 is an apocalyptic number.

It is an amenable number.

47145732 is an abundant number, since it is smaller than the sum of its proper divisors (62861004).

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

47145732 is a wasteful number, since it uses less digits than its factorization.

47145732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3928818 (or 3928816 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 47145732 is about 6866.2749726471. The cubic root of 47145732 is about 361.2552170956.

The spelling of 47145732 in words is "forty-seven million, one hundred forty-five thousand, seven hundred thirty-two".