228513746 has 8 divisors (see below), whose sum is σ = 351131004. Its totient is φ = 111470080.

The previous prime is 228513731. The next prime is 228513799. The reversal of 228513746 is 647315822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 222457225 + 6056521 = 14915^2 + 2461^2 .

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

It is a super-2 number, since 2×228513746² = 104437064221905032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393295 + ... + 1393458.

Almost surely, 2^228513746 is an apocalyptic number.

228513746 is a deficient number, since it is larger than the sum of its proper divisors (122617258).

228513746 is a wasteful number, since it uses less digits than its factorization.

228513746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786796.

The product of its digits is 80640, while the sum is 38.

The square root of 228513746 is about 15116.6711282610. The cubic root of 228513746 is about 611.3699801142.

The spelling of 228513746 in words is "two hundred twenty-eight million, five hundred thirteen thousand, seven hundred forty-six".