1229254628 has 48 divisors (see below), whose sum is σ = 2626606080. Its totient is φ = 491632416.

The previous prime is 1229254601. The next prime is 1229254681. The reversal of 1229254628 is 8264529221.

It is a happy number.

It is a super-2 number, since 2×1229254628² = 3022133880918836768, which contains 22 as substring.

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, 18401 + ... + 52887.

It is an arithmetic number, because the mean of its divisors is an integer number (54720960).

Almost surely, 2^1229254628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1229254628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313303040).

1229254628 is an abundant number, since it is smaller than the sum of its proper divisors (1397351452).

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

1229254628 is a wasteful number, since it uses less digits than its factorization.

1229254628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34584 (or 34582 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 1229254628 is about 35060.7277163495. The cubic root of 1229254628 is about 1071.2247971443.

The spelling of 1229254628 in words is "one billion, two hundred twenty-nine million, two hundred fifty-four thousand, six hundred twenty-eight".