47455128 has 72 divisors (see below), whose sum is σ = 149518980. Its totient is φ = 13557600.

The previous prime is 47455099. The next prime is 47455129. The reversal of 47455128 is 82155474.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47455092 and 47455101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47455129) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3198 + ... + 10253.

Almost surely, 2^47455128 is an apocalyptic number.

It is an amenable number.

47455128 is an abundant number, since it is smaller than the sum of its proper divisors (102063852).

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

47455128 is a wasteful number, since it uses less digits than its factorization.

47455128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13477 (or 13463 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 47455128 is about 6888.7682498397. The cubic root of 47455128 is about 362.0437459216.

The spelling of 47455128 in words is "forty-seven million, four hundred fifty-five thousand, one hundred twenty-eight".