23019490 has 48 divisors (see below), whose sum is σ = 45892008. Its totient is φ = 8306688.

The previous prime is 23019487. The next prime is 23019517. The reversal of 23019490 is 9491032.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 3101121 + 19918369 = 1761^2 + 4463^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89442 + ... + 89698.

Almost surely, 2^23019490 is an apocalyptic number.

23019490 is a deficient number, since it is larger than the sum of its proper divisors (22872518).

23019490 is a wasteful number, since it uses less digits than its factorization.

23019490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 23019490 is about 4797.8630659909. The cubic root of 23019490 is about 284.4670042441.

The spelling of 23019490 in words is "twenty-three million, nineteen thousand, four hundred ninety".