20394610 has 8 divisors (see below), whose sum is σ = 36710316. Its totient is φ = 8157840.

The previous prime is 20394601. The next prime is 20394613. The reversal of 20394610 is 1649302.

It can be written as a sum of positive squares in 2 ways, for example, as 19088161 + 1306449 = 4369^2 + 1143^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20394613) by changing a digit.

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, 1019721 + ... + 1019740.

Almost surely, 2^20394610 is an apocalyptic number.

20394610 is a deficient number, since it is larger than the sum of its proper divisors (16315706).

20394610 is a wasteful number, since it uses less digits than its factorization.

20394610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039468.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20394610 is about 4516.0391938069. The cubic root of 20394610 is about 273.2153747742.

The spelling of 20394610 in words is "twenty million, three hundred ninety-four thousand, six hundred ten".