20454394 has 8 divisors (see below), whose sum is σ = 30721428. Its totient is φ = 10213920.

The previous prime is 20454361. The next prime is 20454403. The reversal of 20454394 is 49345402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20385225 + 69169 = 4515^2 + 263^2 .

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

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, 4587 + ... + 7870.

Almost surely, 2^20454394 is an apocalyptic number.

20454394 is a deficient number, since it is larger than the sum of its proper divisors (10267034).

20454394 is a wasteful number, since it uses less digits than its factorization.

20454394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 20454394 is about 4522.6534247055. The cubic root of 20454394 is about 273.4820787988.

Adding to 20454394 its reverse (49345402), we get a palindrome (69799796).

The spelling of 20454394 in words is "twenty million, four hundred fifty-four thousand, three hundred ninety-four".