1390032 has 90 divisors (see below), whose sum is σ = 4548258. Its totient is φ = 395136.

The previous prime is 1390027. The next prime is 1390043. The reversal of 1390032 is 2300931.

It can be written as a sum of positive squares in only one way, i.e., 1382976 + 7056 = 1176^2 + 84^2 .

It is a super-2 number, since 2×1390032² = 3864377922048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1389987 and 1390014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6958 + ... + 7154.

2^1390032 is an apocalyptic number.

1390032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274129).

1390032 is an abundant number, since it is smaller than the sum of its proper divisors (3158226).

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

1390032 is a wasteful number, since it uses less digits than its factorization.

1390032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1390032 is about 1178.9961831999. The cubic root of 1390032 is about 111.6027594030.

Adding to 1390032 its reverse (2300931), we get a palindrome (3690963).

The spelling of 1390032 in words is "one million, three hundred ninety thousand, thirty-two".