228361040 has 80 divisors (see below), whose sum is σ = 549607680. Its totient is φ = 88174080.

The previous prime is 228361033. The next prime is 228361061. The reversal of 228361040 is 40163822.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529625 + ... + 530055.

It is an arithmetic number, because the mean of its divisors is an integer number (6870096).

Almost surely, 2^228361040 is an apocalyptic number.

228361040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228361040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274803840).

228361040 is an abundant number, since it is smaller than the sum of its proper divisors (321246640).

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

228361040 is a wasteful number, since it uses less digits than its factorization.

228361040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 228361040 is about 15111.6193705374. The cubic root of 228361040 is about 611.2337655980.

The spelling of 228361040 in words is "two hundred twenty-eight million, three hundred sixty-one thousand, forty".