228739392 has 84 divisors (see below), whose sum is σ = 749316256. Its totient is φ = 65352960.

The previous prime is 228739387. The next prime is 228739397. The reversal of 228739392 is 293937822.

228739392 is a `hidden beast` number, since 228 + 7 + 39 + 392 = 666.

It is an interprime number because it is at equal distance from previous prime (228739387) and next prime (228739397).

It is a tau number, because it is divible by the number of its divisors (84).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228739397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24334 + ... + 32397.

Almost surely, 2^228739392 is an apocalyptic number.

It is an amenable number.

228739392 is an abundant number, since it is smaller than the sum of its proper divisors (520576864).

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

228739392 is a wasteful number, since it uses less digits than its factorization.

228739392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56756 (or 56743 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 228739392 is about 15124.1327685259. The cubic root of 228739392 is about 611.5711464343.

The spelling of 228739392 in words is "two hundred twenty-eight million, seven hundred thirty-nine thousand, three hundred ninety-two".