1228904732250 has 288 divisors, whose sum is σ = 3706298891568. Its totient is φ = 292062758400.

The previous prime is 1228904732219. The next prime is 1228904732267. The reversal of 1228904732250 is 522374098221.

1228904732250 is a `hidden beast` number, since 1 + 2 + 28 + 90 + 473 + 22 + 50 = 666.

It can be written as a sum of positive squares in 24 ways, for example, as 758200338009 + 470704394241 = 870747^2 + 686079^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1228904732196 and 1228904732205.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 24574272 + ... + 24624228.

Almost surely, 2^{1228904732250} is an apocalyptic number.

1228904732250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228904732250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1853149445784).

1228904732250 is an abundant number, since it is smaller than the sum of its proper divisors (2477394159318).

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

1228904732250 is a wasteful number, since it uses less digits than its factorization.

1228904732250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50051 (or 50009 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 1228904732250 in words is "one trillion, two hundred twenty-eight billion, nine hundred four million, seven hundred thirty-two thousand, two hundred fifty".