20394450 has 48 divisors (see below), whose sum is σ = 56201760. Its totient is φ = 5438160.

The previous prime is 20394449. The next prime is 20394463. The reversal of 20394450 is 5449302.

20394450 is a `hidden beast` number, since 203 + 9 + 4 + 450 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 23 ways as a sum of consecutive naturals, for example, 6204 + ... + 8903.

It is an arithmetic number, because the mean of its divisors is an integer number (1170870).

Almost surely, 2^20394450 is an apocalyptic number.

20394450 is an abundant number, since it is smaller than the sum of its proper divisors (35807310).

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

20394450 is a wasteful number, since it uses less digits than its factorization.

20394450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15128 (or 15117 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20394450 is about 4516.0214791340. The cubic root of 20394450 is about 273.2146602950.

The spelling of 20394450 in words is "twenty million, three hundred ninety-four thousand, four hundred fifty".