2228497920 has 400 divisors, whose sum is σ = 8716303728. Its totient is φ = 539688960.

The previous prime is 2228497907. The next prime is 2228497939. The reversal of 2228497920 is 297948222.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2280472 + ... + 2281448.

Almost surely, 2^2228497920 is an apocalyptic number.

2228497920 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 2228497920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4358151864).

2228497920 is an abundant number, since it is smaller than the sum of its proper divisors (6487805808).

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

2228497920 is an equidigital number, since it uses as much as digits as its factorization.

2228497920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 2228497920 is about 47206.9689770483. The cubic root of 2228497920 is about 1306.1831521235.

The spelling of 2228497920 in words is "two billion, two hundred twenty-eight million, four hundred ninety-seven thousand, nine hundred twenty".