228480240 has 40 divisors (see below), whose sum is σ = 708289488. Its totient is φ = 60928000.

The previous prime is 228480233. The next prime is 228480247. The reversal of 228480240 is 42084822.

It is an interprime number because it is at equal distance from previous prime (228480233) and next prime (228480247).

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 228480198 and 228480207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228480247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475761 + ... + 476240.

Almost surely, 2^228480240 is an apocalyptic number.

228480240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228480240 is an abundant number, since it is smaller than the sum of its proper divisors (479809248).

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

228480240 is a wasteful number, since it uses less digits than its factorization.

228480240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952017 (or 952011 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 228480240 is about 15115.5628409927. The cubic root of 228480240 is about 611.3400977925.

The spelling of 228480240 in words is "two hundred twenty-eight million, four hundred eighty thousand, two hundred forty".