1373280 has 48 divisors (see below), whose sum is σ = 4327344. Its totient is φ = 366080.

The previous prime is 1373233. The next prime is 1373321. The reversal of 1373280 is 823731.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-4 number, since 4×1373280⁴ (a number of 26 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1373280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951 + ... + 1910.

It is an arithmetic number, because the mean of its divisors is an integer number (90153).

2^1373280 is an apocalyptic number.

1373280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1373280 is an abundant number, since it is smaller than the sum of its proper divisors (2954064).

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

1373280 is a wasteful number, since it uses less digits than its factorization.

1373280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1373280 is about 1171.8702999906. The cubic root of 1373280 is about 111.1526185663.

It can be divided in two parts, 1373 and 280, that added together give a triangular number (1653 = T₅₇).

The spelling of 1373280 in words is "one million, three hundred seventy-three thousand, two hundred eighty".