890798420 has 12 divisors (see below), whose sum is σ = 1870676724. Its totient is φ = 356319360.

The previous prime is 890798417. The next prime is 890798459. The reversal of 890798420 is 24897098.

It can be written as a sum of positive squares in 2 ways, for example, as 298460176 + 592338244 = 17276^2 + 24338^2 .

It is a super-3 number, since 3×890798420³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 22269941 + ... + 22269980.

It is an arithmetic number, because the mean of its divisors is an integer number (155889727).

Almost surely, 2^890798420 is an apocalyptic number.

It is an amenable number.

890798420 is an abundant number, since it is smaller than the sum of its proper divisors (979878304).

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

890798420 is a wasteful number, since it uses less digits than its factorization.

890798420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44539930 (or 44539928 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 890798420 is about 29846.2463301501. The cubic root of 890798420 is about 962.1877262112.

The spelling of 890798420 in words is "eight hundred ninety million, seven hundred ninety-eight thousand, four hundred twenty".