228271392 has 96 divisors (see below), whose sum is σ = 668424960. Its totient is φ = 75790080.

The previous prime is 228271387. The next prime is 228271399. The reversal of 228271392 is 293172822.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228271399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372078 + ... + 372690.

It is an arithmetic number, because the mean of its divisors is an integer number (6962760).

Almost surely, 2^228271392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228271392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334212480).

228271392 is an abundant number, since it is smaller than the sum of its proper divisors (440153568).

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

228271392 is a wasteful number, since it uses less digits than its factorization.

228271392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1049 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 228271392 is about 15108.6528850192. The cubic root of 228271392 is about 611.1537708426.

The spelling of 228271392 in words is "two hundred twenty-eight million, two hundred seventy-one thousand, three hundred ninety-two".