228621554 has 24 divisors (see below), whose sum is σ = 404886960. Its totient is φ = 96515496.

The previous prime is 228621553. The next prime is 228621571. The reversal of 228621554 is 455126822.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228621553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10844 + ... + 23975.

It is an arithmetic number, because the mean of its divisors is an integer number (16870290).

Almost surely, 2^228621554 is an apocalyptic number.

228621554 is a deficient number, since it is larger than the sum of its proper divisors (176265406).

228621554 is a wasteful number, since it uses less digits than its factorization.

228621554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34902 (or 34895 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 228621554 is about 15120.2365722233. The cubic root of 228621554 is about 611.4661088499.

The spelling of 228621554 in words is "two hundred twenty-eight million, six hundred twenty-one thousand, five hundred fifty-four".