1228748900 has 18 divisors (see below), whose sum is σ = 2666385330. Its totient is φ = 491499520.

The previous prime is 1228748837. The next prime is 1228748923. The reversal of 1228748900 is 98478221.

It can be written as a sum of positive squares in 3 ways, for example, as 255808036 + 972940864 = 15994^2 + 31192^2 .

It is a super-3 number, since 3×1228748900³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6143645 + ... + 6143844.

Almost surely, 2^1228748900 is an apocalyptic number.

1228748900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228748900 is an abundant number, since it is smaller than the sum of its proper divisors (1437636430).

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

1228748900 is a wasteful number, since it uses less digits than its factorization.

1228748900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12287503 (or 12287496 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 1228748900 is about 35053.5148023704. The cubic root of 1228748900 is about 1071.0778726931.

The spelling of 1228748900 in words is "one billion, two hundred twenty-eight million, seven hundred forty-eight thousand, nine hundred".