890388 has 18 divisors (see below), whose sum is σ = 2250794. Its totient is φ = 296784.

The previous prime is 890377. The next prime is 890419. The reversal of 890388 is 883098.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 345744 = 738^2 + 588^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 24733 = 890388 / (8 + 9 + 0 + 3 + 8 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12331 + ... + 12402.

2⁸⁹⁰³⁸⁸ is an apocalyptic number.

It is an amenable number.

890388 is an abundant number, since it is smaller than the sum of its proper divisors (1360406).

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

890388 is a wasteful number, since it uses less digits than its factorization.

890388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24743 (or 24738 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 890388 is about 943.6037303869. The cubic root of 890388 is about 96.2039933048.

The spelling of 890388 in words is "eight hundred ninety thousand, three hundred eighty-eight".