1254642788 has 48 divisors (see below), whose sum is σ = 2634240000. Its totient is φ = 511518240.

The previous prime is 1254642749. The next prime is 1254642791. The reversal of 1254642788 is 8872464521.

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, 38963 + ... + 63461.

It is an arithmetic number, because the mean of its divisors is an integer number (54880000).

Almost surely, 2^1254642788 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 1254642788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317120000).

1254642788 is an abundant number, since it is smaller than the sum of its proper divisors (1379597212).

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

1254642788 is a wasteful number, since it uses less digits than its factorization.

1254642788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24600 (or 24598 counting only the distinct ones).

The product of its digits is 860160, while the sum is 47.

The square root of 1254642788 is about 35420.9371417528. The cubic root of 1254642788 is about 1078.5493750226.

The spelling of 1254642788 in words is "one billion, two hundred fifty-four million, six hundred forty-two thousand, seven hundred eighty-eight".