1389672 has 24 divisors (see below), whose sum is σ = 3763890. Its totient is φ = 463200.

The previous prime is 1389667. The next prime is 1389673. The reversal of 1389672 is 2769831.

It can be written as a sum of positive squares in only one way, i.e., 1153476 + 236196 = 1074^2 + 486^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1389673) 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, 9579 + ... + 9722.

2^1389672 is an apocalyptic number.

1389672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1389672 is an abundant number, since it is smaller than the sum of its proper divisors (2374218).

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

1389672 is a wasteful number, since it uses less digits than its factorization.

1389672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19313 (or 19306 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1389672 is about 1178.8435010636. The cubic root of 1389672 is about 111.5931240223.

The spelling of 1389672 in words is "one million, three hundred eighty-nine thousand, six hundred seventy-two".