228351515 has 24 divisors (see below), whose sum is σ = 321890400. Its totient is φ = 155046528.

The previous prime is 228351493. The next prime is 228351547. The reversal of 228351515 is 515153822.

It is not a de Polignac number, because 228351515 - 2¹⁰ = 228350491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20711 + ... + 29759.

It is an arithmetic number, because the mean of its divisors is an integer number (13412100).

Almost surely, 2^228351515 is an apocalyptic number.

228351515 is a deficient number, since it is larger than the sum of its proper divisors (93538885).

228351515 is a wasteful number, since it uses less digits than its factorization.

228351515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9171 (or 9164 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The square root of 228351515 is about 15111.3042124100. The cubic root of 228351515 is about 611.2252672386.

The spelling of 228351515 in words is "two hundred twenty-eight million, three hundred fifty-one thousand, five hundred fifteen".