47028915 has 24 divisors (see below), whose sum is σ = 81729648. Its totient is φ = 25016640.

The previous prime is 47028913. The next prime is 47028929. The reversal of 47028915 is 51982074.

It is not a de Polignac number, because 47028915 - 2¹ = 47028913 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 47028915.

It is not an unprimeable number, because it can be changed into a prime (47028913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19612 + ... + 21878.

It is an arithmetic number, because the mean of its divisors is an integer number (3405402).

Almost surely, 2^47028915 is an apocalyptic number.

47028915 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47028915 is a deficient number, since it is larger than the sum of its proper divisors (34700733).

47028915 is a wasteful number, since it uses less digits than its factorization.

47028915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739 (or 2736 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 47028915 is about 6857.7631192686. The cubic root of 47028915 is about 360.9565993716.

The spelling of 47028915 in words is "forty-seven million, twenty-eight thousand, nine hundred fifteen".