1245917028 has 12 divisors (see below), whose sum is σ = 2907139760. Its totient is φ = 415305672.

The previous prime is 1245917011. The next prime is 1245917041. The reversal of 1245917028 is 8207195421.

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 (39) coincides with the sum of the digits of its distinct prime factors.

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, 51913198 + ... + 51913221.

Almost surely, 2^1245917028 is an apocalyptic number.

It is an amenable number.

1245917028 is an abundant number, since it is smaller than the sum of its proper divisors (1661222732).

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

1245917028 is a wasteful number, since it uses less digits than its factorization.

1245917028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103826426 (or 103826424 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 1245917028 is about 35297.5498866423. The cubic root of 1245917028 is about 1076.0431994836.

The spelling of 1245917028 in words is "one billion, two hundred forty-five million, nine hundred seventeen thousand, twenty-eight".