228276732 has 12 divisors (see below), whose sum is σ = 532645736. Its totient is φ = 76092240.

The previous prime is 228276721. The next prime is 228276743. The reversal of 228276732 is 237672822.

It is an interprime number because it is at equal distance from previous prime (228276721) and next prime (228276743).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×228276732² = 104220532745199648, which contains 22 as substring.

It is a congruent number.

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, 9511519 + ... + 9511542.

Almost surely, 2^228276732 is an apocalyptic number.

It is an amenable number.

228276732 is an abundant number, since it is smaller than the sum of its proper divisors (304369004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228276732 is a wasteful number, since it uses less digits than its factorization.

228276732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19023068 (or 19023066 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 228276732 is about 15108.8296039104. The cubic root of 228276732 is about 611.1585364211.

The spelling of 228276732 in words is "two hundred twenty-eight million, two hundred seventy-six thousand, seven hundred thirty-two".