1258492928 has 132 divisors (see below), whose sum is σ = 3162467616. Its totient is φ = 489984000.

The previous prime is 1258492927. The next prime is 1258492931. The reversal of 1258492928 is 8292948521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258492927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 866603 + ... + 868053.

It is an arithmetic number, because the mean of its divisors is an integer number (23958088).

Almost surely, 2^1258492928 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 1258492928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1581233808).

1258492928 is an abundant number, since it is smaller than the sum of its proper divisors (1903974688).

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

1258492928 is a wasteful number, since it uses less digits than its factorization.

1258492928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1471 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 1258492928 is about 35475.2438751307. The cubic root of 1258492928 is about 1079.6515016406.

The spelling of 1258492928 in words is "one billion, two hundred fifty-eight million, four hundred ninety-two thousand, nine hundred twenty-eight".