1373890 has 32 divisors (see below), whose sum is σ = 2977920. Its totient is φ = 445824.

The previous prime is 1373887. The next prime is 1373891. The reversal of 1373890 is 983731.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1373891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814 + ... + 1846.

It is an arithmetic number, because the mean of its divisors is an integer number (93060).

2^1373890 is an apocalyptic number.

1373890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1373890 is an abundant number, since it is smaller than the sum of its proper divisors (1604030).

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

1373890 is a wasteful number, since it uses less digits than its factorization.

1373890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1373890 is about 1172.1305388053. The cubic root of 1373890 is about 111.1690738317.

The spelling of 1373890 in words is "one million, three hundred seventy-three thousand, eight hundred ninety".