20495458 has 8 divisors (see below), whose sum is σ = 30766428. Its totient is φ = 10239984.

The previous prime is 20495441. The next prime is 20495467. The reversal of 20495458 is 85459402.

It can be written as a sum of positive squares in 2 ways, for example, as 18515809 + 1979649 = 4303^2 + 1407^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360 + ... + 6412.

Almost surely, 2^20495458 is an apocalyptic number.

20495458 is a deficient number, since it is larger than the sum of its proper divisors (10270970).

20495458 is a wasteful number, since it uses less digits than its factorization.

20495458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7748.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 20495458 is about 4527.1909612916. The cubic root of 20495458 is about 273.6649695949.

The spelling of 20495458 in words is "twenty million, four hundred ninety-five thousand, four hundred fifty-eight".