20645094 has 8 divisors (see below), whose sum is σ = 41290200. Its totient is φ = 6881696.

The previous prime is 20645083. The next prime is 20645111. The reversal of 20645094 is 49054602.

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

20645094 is an admirable number.

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, 1720419 + ... + 1720430.

It is an arithmetic number, because the mean of its divisors is an integer number (5161275).

Almost surely, 2^20645094 is an apocalyptic number.

20645094 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20645094 is a wasteful number, since it uses less digits than its factorization.

20645094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440854.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20645094 is about 4543.6872691681. The cubic root of 20645094 is about 274.3293586768.

Adding to 20645094 its reverse (49054602), we get a palindrome (69699696).

The spelling of 20645094 in words is "twenty million, six hundred forty-five thousand, ninety-four".