1292172560 has 40 divisors (see below), whose sum is σ = 3433488576. Its totient is φ = 443030400.

The previous prime is 1292172559. The next prime is 1292172587. The reversal of 1292172560 is 652712921.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1292172560.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153166 + ... + 1154285.

Almost surely, 2^1292172560 is an apocalyptic number.

1292172560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1292172560 is an abundant number, since it is smaller than the sum of its proper divisors (2141316016).

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

1292172560 is a wasteful number, since it uses less digits than its factorization.

1292172560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307471 (or 2307465 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1292172560 is about 35946.8018048894. The cubic root of 1292172560 is about 1089.1980072600.

The spelling of 1292172560 in words is "one billion, two hundred ninety-two million, one hundred seventy-two thousand, five hundred sixty".