228081455 has 32 divisors (see below), whose sum is σ = 327849984. Its totient is φ = 148934016.

The previous prime is 228081437. The next prime is 228081463. The reversal of 228081455 is 554180822.

It is a happy number.

It is not a de Polignac number, because 228081455 - 2¹⁶ = 228015919 is a prime.

It is a super-2 number, since 2×228081455² = 104042300229834050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235382 + ... + 236348.

It is an arithmetic number, because the mean of its divisors is an integer number (10245312).

Almost surely, 2^228081455 is an apocalyptic number.

228081455 is a deficient number, since it is larger than the sum of its proper divisors (99768529).

228081455 is a wasteful number, since it uses less digits than its factorization.

228081455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 228081455 is about 15102.3658742596. The cubic root of 228081455 is about 610.9842169281.

The spelling of 228081455 in words is "two hundred twenty-eight million, eighty-one thousand, four hundred fifty-five".