20491262 has 8 divisors (see below), whose sum is σ = 33531192. Its totient is φ = 9314200.

The previous prime is 20491243. The next prime is 20491277. The reversal of 20491262 is 26219402.

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

It is a congruent number.

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, 465689 + ... + 465732.

It is an arithmetic number, because the mean of its divisors is an integer number (4191399).

Almost surely, 2^20491262 is an apocalyptic number.

20491262 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20491262 is a deficient number, since it is larger than the sum of its proper divisors (13039930).

20491262 is a wasteful number, since it uses less digits than its factorization.

20491262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931434.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20491262 is about 4526.7275155459. The cubic root of 20491262 is about 273.6462926668.

The spelling of 20491262 in words is "twenty million, four hundred ninety-one thousand, two hundred sixty-two".