1292880 has 40 divisors (see below), whose sum is σ = 4008672. Its totient is φ = 344704.

The previous prime is 1292857. The next prime is 1292887. The reversal of 1292880 is 882921.

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 (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2454 + ... + 2933.

2^1292880 is an apocalyptic number.

1292880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1292880 is an abundant number, since it is smaller than the sum of its proper divisors (2715792).

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

1292880 is a wasteful number, since it uses less digits than its factorization.

1292880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5403 (or 5397 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1292880 is about 1137.0488116172. The cubic root of 1292880 is about 108.9396742755.

The spelling of 1292880 in words is "one million, two hundred ninety-two thousand, eight hundred eighty".