228023772 has 24 divisors (see below), whose sum is σ = 532363776. Its totient is φ = 75963888.

The previous prime is 228023767. The next prime is 228023777. The reversal of 228023772 is 277320822.

It is an interprime number because it is at equal distance from previous prime (228023767) and next prime (228023777).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228023777) 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, 21283 + ... + 30149.

It is an arithmetic number, because the mean of its divisors is an integer number (22181824).

Almost surely, 2^228023772 is an apocalyptic number.

It is an amenable number.

228023772 is an abundant number, since it is smaller than the sum of its proper divisors (304340004).

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

228023772 is a wasteful number, since it uses less digits than its factorization.

228023772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11017 (or 11015 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 228023772 is about 15100.4560196042. The cubic root of 228023772 is about 610.9327055443.

The spelling of 228023772 in words is "two hundred twenty-eight million, twenty-three thousand, seven hundred seventy-two".