228023402 has 4 divisors (see below), whose sum is σ = 342035106. Its totient is φ = 114011700.

The previous prime is 228023401. The next prime is 228023413. The reversal of 228023402 is 204320822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 222875041 + 5148361 = 14929^2 + 2269^2 .

It is not an unprimeable number, because it can be changed into a prime (228023401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57005849 + ... + 57005852.

Almost surely, 2^228023402 is an apocalyptic number.

228023402 is a deficient number, since it is larger than the sum of its proper divisors (114011704).

228023402 is a wasteful number, since it uses less digits than its factorization.

228023402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114011703.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 228023402 is about 15100.4437683136. The cubic root of 228023402 is about 610.9323751033.

The spelling of 228023402 in words is "two hundred twenty-eight million, twenty-three thousand, four hundred two".