1251002672 has 20 divisors (see below), whose sum is σ = 2469551760. Its totient is φ = 613699008.

The previous prime is 1251002663. The next prime is 1251002689. The reversal of 1251002672 is 2762001521.

It is a super-2 number, since 2×1251002672² = 3130015370702279168, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736772 + ... + 738467.

It is an arithmetic number, because the mean of its divisors is an integer number (123477588).

Almost surely, 2^1251002672 is an apocalyptic number.

It is an amenable number.

1251002672 is a deficient number, since it is larger than the sum of its proper divisors (1218549088).

1251002672 is a wasteful number, since it uses less digits than its factorization.

1251002672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475300 (or 1475294 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1251002672 is about 35369.5161403150. The cubic root of 1251002672 is about 1077.5052935501.

The spelling of 1251002672 in words is "one billion, two hundred fifty-one million, two thousand, six hundred seventy-two".