228294261 has 32 divisors (see below), whose sum is σ = 375997440. Its totient is φ = 135950400.

The previous prime is 228294229. The next prime is 228294263. The reversal of 228294261 is 162492822.

228294261 = 101³ + 102³ + ... + 178³.

228294261 is a `hidden beast` number, since 228 + 2 + 9 + 426 + 1 = 666.

It is not a de Polignac number, because 228294261 - 2⁵ = 228294229 is a prime.

It is a super-2 number, since 2×228294261² = 104236539211072242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228294263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391 + ... + 21371.

It is an arithmetic number, because the mean of its divisors is an integer number (11749920).

Almost surely, 2^228294261 is an apocalyptic number.

It is an amenable number.

228294261 is a deficient number, since it is larger than the sum of its proper divisors (147703179).

228294261 is a wasteful number, since it uses less digits than its factorization.

228294261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21034 (or 21028 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 228294261 is about 15109.4096840346. The cubic root of 228294261 is about 611.1741793116.

The spelling of 228294261 in words is "two hundred twenty-eight million, two hundred ninety-four thousand, two hundred sixty-one".