228702513 has 32 divisors (see below), whose sum is σ = 357146496. Its totient is φ = 128867328.

The previous prime is 228702511. The next prime is 228702533. The reversal of 228702513 is 315207822.

228702513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228702513 - 2¹ = 228702511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228702511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19870 + ... + 29192.

It is an arithmetic number, because the mean of its divisors is an integer number (11160828).

Almost surely, 2^228702513 is an apocalyptic number.

It is an amenable number.

228702513 is a deficient number, since it is larger than the sum of its proper divisors (128443983).

228702513 is a wasteful number, since it uses less digits than its factorization.

228702513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9393.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 228702513 is about 15122.9135089770. The cubic root of 228702513 is about 611.5382773770.

The spelling of 228702513 in words is "two hundred twenty-eight million, seven hundred two thousand, five hundred thirteen".