20914090 has 8 divisors (see below), whose sum is σ = 37645380. Its totient is φ = 8365632.

The previous prime is 20914081. The next prime is 20914093. The reversal of 20914090 is 9041902.

It can be written as a sum of positive squares in 2 ways, for example, as 18395521 + 2518569 = 4289^2 + 1587^2 .

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 (20914093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045695 + ... + 1045714.

Almost surely, 2^20914090 is an apocalyptic number.

20914090 is a deficient number, since it is larger than the sum of its proper divisors (16731290).

20914090 is a wasteful number, since it uses less digits than its factorization.

20914090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091416.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 20914090 is about 4573.1925391350. The cubic root of 20914090 is about 275.5156825207.

Adding to 20914090 its reverse (9041902), we get a palindrome (29955992).

The spelling of 20914090 in words is "twenty million, nine hundred fourteen thousand, ninety".