47428215 has 16 divisors (see below), whose sum is σ = 80349408. Its totient is φ = 23806976.

The previous prime is 47428211. The next prime is 47428223. The reversal of 47428215 is 51282474.

It is a cyclic number.

It is not a de Polignac number, because 47428215 - 2² = 47428211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47428211) 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, 92742 + ... + 93251.

It is an arithmetic number, because the mean of its divisors is an integer number (5021838).

Almost surely, 2^47428215 is an apocalyptic number.

47428215 is a deficient number, since it is larger than the sum of its proper divisors (32921193).

47428215 is a wasteful number, since it uses less digits than its factorization.

47428215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186018.

The product of its digits is 17920, while the sum is 33.

The square root of 47428215 is about 6886.8145756946. The cubic root of 47428215 is about 361.9752915993.

The spelling of 47428215 in words is "forty-seven million, four hundred twenty-eight thousand, two hundred fifteen".