2228139900 has 216 divisors, whose sum is σ = 8277942400. Its totient is φ = 509250240.

The previous prime is 2228139887. The next prime is 2228139913. The reversal of 2228139900 is 99318222.

It is an interprime number because it is at equal distance from previous prime (2228139887) and next prime (2228139913).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 163551 + ... + 176649.

Almost surely, 2^2228139900 is an apocalyptic number.

2228139900 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 2228139900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4138971200).

2228139900 is an abundant number, since it is smaller than the sum of its proper divisors (6049802500).

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

2228139900 is a wasteful number, since it uses less digits than its factorization.

2228139900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13135 (or 13116 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2228139900 is about 47203.1767998723. The cubic root of 2228139900 is about 1306.1131999622.

The spelling of 2228139900 in words is "two billion, two hundred twenty-eight million, one hundred thirty-nine thousand, nine hundred".