228013557 has 8 divisors (see below), whose sum is σ = 304097280. Its totient is φ = 151969440.

The previous prime is 228013553. The next prime is 228013561. The reversal of 228013557 is 755310822.

It is an interprime number because it is at equal distance from previous prime (228013553) and next prime (228013561).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228013557 - 2² = 228013553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228013553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8332 + ... + 22922.

It is an arithmetic number, because the mean of its divisors is an integer number (38012160).

Almost surely, 2^228013557 is an apocalyptic number.

It is an amenable number.

228013557 is a deficient number, since it is larger than the sum of its proper divisors (76083723).

228013557 is a wasteful number, since it uses less digits than its factorization.

228013557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19803.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 228013557 is about 15100.1177809976. The cubic root of 228013557 is about 610.9235825616.

The spelling of 228013557 in words is "two hundred twenty-eight million, thirteen thousand, five hundred fifty-seven".