228953240 has 32 divisors (see below), whose sum is σ = 516818880. Its totient is φ = 91283712.

The previous prime is 228953239. The next prime is 228953261. The reversal of 228953240 is 42359822.

It is a super-2 number, since 2×228953240² = 104839172212995200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228953240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3377 + ... + 21663.

It is an arithmetic number, because the mean of its divisors is an integer number (16150590).

Almost surely, 2^228953240 is an apocalyptic number.

228953240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228953240 is an abundant number, since it is smaller than the sum of its proper divisors (287865640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228953240 is a wasteful number, since it uses less digits than its factorization.

228953240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18611 (or 18607 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 228953240 is about 15131.2008776567. The cubic root of 228953240 is about 611.7616726195.

The spelling of 228953240 in words is "two hundred twenty-eight million, nine hundred fifty-three thousand, two hundred forty".