228169401 has 16 divisors (see below), whose sum is σ = 306639168. Its totient is φ = 150912000.

The previous prime is 228169397. The next prime is 228169421. The reversal of 228169401 is 104961822.

It is not a de Polignac number, because 228169401 - 2² = 228169397 is a prime.

It is a super-2 number, since 2×228169401² = 104122551105397602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228169421) 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, 289530 + ... + 290316.

It is an arithmetic number, because the mean of its divisors is an integer number (19164948).

Almost surely, 2^228169401 is an apocalyptic number.

It is an amenable number.

228169401 is a deficient number, since it is larger than the sum of its proper divisors (78469767).

228169401 is a wasteful number, since it uses less digits than its factorization.

228169401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 228169401 is about 15105.2772566411. The cubic root of 228169401 is about 611.0627367022.

The spelling of 228169401 in words is "two hundred twenty-eight million, one hundred sixty-nine thousand, four hundred one".