890436380 has 24 divisors (see below), whose sum is σ = 1879613232. Its totient is φ = 354327552.

The previous prime is 890436377. The next prime is 890436409. The reversal of 890436380 is 83634098.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111482 + ... + 119201.

It is an arithmetic number, because the mean of its divisors is an integer number (78317218).

Almost surely, 2^890436380 is an apocalyptic number.

It is an amenable number.

890436380 is an abundant number, since it is smaller than the sum of its proper divisors (989176852).

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

890436380 is a wasteful number, since it uses less digits than its factorization.

890436380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230885 (or 230883 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 890436380 is about 29840.1806294801. The cubic root of 890436380 is about 962.0573571552.

The spelling of 890436380 in words is "eight hundred ninety million, four hundred thirty-six thousand, three hundred eighty".