1280172000 has 96 divisors (see below), whose sum is σ = 4193882784. Its totient is φ = 341376000.

The previous prime is 1280171999. The next prime is 1280172043. The reversal of 1280172000 is 2710821.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41341 + ... + 65340.

It is an arithmetic number, because the mean of its divisors is an integer number (43686279).

Almost surely, 2^1280172000 is an apocalyptic number.

1280172000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280172000 is an abundant number, since it is smaller than the sum of its proper divisors (2913710784).

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

1280172000 is a wasteful number, since it uses less digits than its factorization.

1280172000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106709 (or 106691 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1280172000 is about 35779.4913323261. The cubic root of 1280172000 is about 1085.8156777754.

Adding to 1280172000 its reverse (2710821), we get a palindrome (1282882821).

The spelling of 1280172000 in words is "one billion, two hundred eighty million, one hundred seventy-two thousand".