228493040 has 40 divisors (see below), whose sum is σ = 554348448. Its totient is φ = 87422720.

The previous prime is 228493021. The next prime is 228493061. The reversal of 228493040 is 40394822.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 228492988 and 228493006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60251 + ... + 63930.

Almost surely, 2^228493040 is an apocalyptic number.

228493040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228493040 is an abundant number, since it is smaller than the sum of its proper divisors (325855408).

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

228493040 is a wasteful number, since it uses less digits than its factorization.

228493040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124217 (or 124211 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 228493040 is about 15115.9862397397. The cubic root of 228493040 is about 611.3515138156.

The spelling of 228493040 in words is "two hundred twenty-eight million, four hundred ninety-three thousand, forty".