1390250 has 32 divisors (see below), whose sum is σ = 2673216. Its totient is φ = 541200.

The previous prime is 1390247. The next prime is 1390253. The reversal of 1390250 is 520931.

It is an interprime number because it is at equal distance from previous prime (1390247) and next prime (1390253).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1390253) 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, 16709 + ... + 16791.

It is an arithmetic number, because the mean of its divisors is an integer number (83538).

2^1390250 is an apocalyptic number.

1390250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390250 is a deficient number, since it is larger than the sum of its proper divisors (1282966).

1390250 is an equidigital number, since it uses as much as digits as its factorization.

1390250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1390250 is about 1179.0886311045. The cubic root of 1390250 is about 111.6085933526.

The spelling of 1390250 in words is "one million, three hundred ninety thousand, two hundred fifty".