1280372 has 24 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 570240.

The previous prime is 1280371. The next prime is 1280399. The reversal of 1280372 is 2730821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280371) 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, 797 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (104160).

2^1280372 is an apocalyptic number.

It is an amenable number.

1280372 is a deficient number, since it is larger than the sum of its proper divisors (1219468).

1280372 is a wasteful number, since it uses less digits than its factorization.

1280372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1280372 is about 1131.5352402820. The cubic root of 1280372 is about 108.5872220133.

The spelling of 1280372 in words is "one million, two hundred eighty thousand, three hundred seventy-two".