890513281 has 8 divisors (see below), whose sum is σ = 1032920000. Its totient is φ = 751904208.

The previous prime is 890513279. The next prime is 890513291. The reversal of 890513281 is 182315098.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 890513281 - 2¹ = 890513279 is a prime.

It is a super-2 number, since 2×890513281² = 1586027807274769922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 890513281.

It is not an unprimeable number, because it can be changed into a prime (890513231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948906 + ... + 949843.

It is an arithmetic number, because the mean of its divisors is an integer number (129115000).

Almost surely, 2^890513281 is an apocalyptic number.

It is an amenable number.

890513281 is a deficient number, since it is larger than the sum of its proper divisors (142406719).

890513281 is a wasteful number, since it uses less digits than its factorization.

890513281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898823.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 890513281 is about 29841.4691494906. The cubic root of 890513281 is about 962.0850518319.

The spelling of 890513281 in words is "eight hundred ninety million, five hundred thirteen thousand, two hundred eighty-one".