1390248 has 24 divisors (see below), whose sum is σ = 3765450. Its totient is φ = 463392.

The previous prime is 1390247. The next prime is 1390253. The reversal of 1390248 is 8420931.

It can be written as a sum of positive squares in only one way, i.e., 1340964 + 49284 = 1158^2 + 222^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1390241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9583 + ... + 9726.

2^1390248 is an apocalyptic number.

1390248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1390248 is an abundant number, since it is smaller than the sum of its proper divisors (2375202).

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

1390248 is a wasteful number, since it uses less digits than its factorization.

1390248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19321 (or 19314 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1390248 is about 1179.0877829916. The cubic root of 1390248 is about 111.6085398329.

The spelling of 1390248 in words is "one million, three hundred ninety thousand, two hundred forty-eight".