1258396428 has 12 divisors (see below), whose sum is σ = 2936258360. Its totient is φ = 419465472.

The previous prime is 1258396421. The next prime is 1258396439. The reversal of 1258396428 is 8246938521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1258396421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52433173 + ... + 52433196.

Almost surely, 2^1258396428 is an apocalyptic number.

It is an amenable number.

1258396428 is an abundant number, since it is smaller than the sum of its proper divisors (1677861932).

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

1258396428 is a wasteful number, since it uses less digits than its factorization.

1258396428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104866376 (or 104866374 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 1258396428 is about 35473.8837456515. The cubic root of 1258396428 is about 1079.6239053968.

The spelling of 1258396428 in words is "one billion, two hundred fifty-eight million, three hundred ninety-six thousand, four hundred twenty-eight".