228011751 has 24 divisors (see below), whose sum is σ = 361395216. Its totient is φ = 137379840.

The previous prime is 228011747. The next prime is 228011753. The reversal of 228011751 is 157110822.

It is not a de Polignac number, because 228011751 - 2² = 228011747 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228011753) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10471 + ... + 23783.

It is an arithmetic number, because the mean of its divisors is an integer number (15058134).

Almost surely, 2^228011751 is an apocalyptic number.

228011751 is a deficient number, since it is larger than the sum of its proper divisors (133383465).

228011751 is a wasteful number, since it uses less digits than its factorization.

228011751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13503 (or 13500 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 228011751 is about 15100.0579800211. The cubic root of 228011751 is about 610.9219696006.

The spelling of 228011751 in words is "two hundred twenty-eight million, eleven thousand, seven hundred fifty-one".