47911512 has 64 divisors (see below), whose sum is σ = 131788800. Its totient is φ = 14394240.

The previous prime is 47911489. The next prime is 47911517. The reversal of 47911512 is 21511974.

It is a super-2 number, since 2×47911512² = 4591025964252288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47911512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47911517) 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, 32814 + ... + 34242.

It is an arithmetic number, because the mean of its divisors is an integer number (2059200).

Almost surely, 2^47911512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47911512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65894400).

47911512 is an abundant number, since it is smaller than the sum of its proper divisors (83877288).

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

47911512 is a wasteful number, since it uses less digits than its factorization.

47911512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576 (or 1572 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 47911512 is about 6921.8142130514. The cubic root of 47911512 is about 363.2006570722.

The spelling of 47911512 in words is "forty-seven million, nine hundred eleven thousand, five hundred twelve".