20394674 has 8 divisors (see below), whose sum is σ = 30641520. Its totient is φ = 10180836.

The previous prime is 20394643. The next prime is 20394691. The reversal of 20394674 is 47649302.

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

It is a Curzon number.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6644 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (3830190).

Almost surely, 2^20394674 is an apocalyptic number.

20394674 is a deficient number, since it is larger than the sum of its proper divisors (10246846).

20394674 is a wasteful number, since it uses less digits than its factorization.

20394674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16504.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 20394674 is about 4516.0462796566. The cubic root of 20394674 is about 273.2156605648.

The spelling of 20394674 in words is "twenty million, three hundred ninety-four thousand, six hundred seventy-four".