20901246 has 8 divisors (see below), whose sum is σ = 41802504. Its totient is φ = 6967080.

The previous prime is 20901241. The next prime is 20901247. The reversal of 20901246 is 64210902.

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

20901246 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20901241) 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, 1741765 + ... + 1741776.

It is an arithmetic number, because the mean of its divisors is an integer number (5225313).

Almost surely, 2^20901246 is an apocalyptic number.

20901246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20901246 is a wasteful number, since it uses less digits than its factorization.

20901246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483546.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20901246 is about 4571.7880528301. The cubic root of 20901246 is about 275.4592700242.

The spelling of 20901246 in words is "twenty million, nine hundred one thousand, two hundred forty-six".