1253454728 has 16 divisors (see below), whose sum is σ = 2352050880. Its totient is φ = 626241168.

The previous prime is 1253454707. The next prime is 1253454731. The reversal of 1253454728 is 8274543521.

It is a super-2 number, since 2×1253454728² = 3142297510291107968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49700 + ... + 70547.

It is an arithmetic number, because the mean of its divisors is an integer number (147003180).

Almost surely, 2^1253454728 is an apocalyptic number.

It is an amenable number.

1253454728 is a deficient number, since it is larger than the sum of its proper divisors (1098596152).

1253454728 is a wasteful number, since it uses less digits than its factorization.

1253454728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121556 (or 121552 counting only the distinct ones).

The product of its digits is 268800, while the sum is 41.

The square root of 1253454728 is about 35404.1625801261. The cubic root of 1253454728 is about 1078.2088302727.

The spelling of 1253454728 in words is "one billion, two hundred fifty-three million, four hundred fifty-four thousand, seven hundred twenty-eight".