1245887928 has 24 divisors (see below), whose sum is σ = 3374280000. Its totient is φ = 415295952.

The previous prime is 1245887899. The next prime is 1245887933. The reversal of 1245887928 is 8297885421.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1245887928² = 3104473458272266368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8651928 + ... + 8652071.

It is an arithmetic number, because the mean of its divisors is an integer number (140595000).

Almost surely, 2^1245887928 is an apocalyptic number.

1245887928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1245887928 is an abundant number, since it is smaller than the sum of its proper divisors (2128392072).

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

1245887928 is a wasteful number, since it uses less digits than its factorization.

1245887928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17304011 (or 17304004 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 1245887928 is about 35297.1376743214. The cubic root of 1245887928 is about 1076.0348219592.

The spelling of 1245887928 in words is "one billion, two hundred forty-five million, eight hundred eighty-seven thousand, nine hundred twenty-eight".