20011244 has 48 divisors (see below), whose sum is σ = 41803776. Its totient is φ = 8275200.

The previous prime is 20011177. The next prime is 20011249. The reversal of 20011244 is 44211002.

20011244 = T₃₃₇ + T₃₃₈ + ... + T₅₄₀.

It is not an unprimeable number, because it can be changed into a prime (20011249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22757 + ... + 23619.

It is an arithmetic number, because the mean of its divisors is an integer number (870912).

Almost surely, 2^20011244 is an apocalyptic number.

It is an amenable number.

20011244 is an abundant number, since it is smaller than the sum of its proper divisors (21792532).

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

20011244 is a wasteful number, since it uses less digits than its factorization.

20011244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20011244 is about 4473.3928957783. The cubic root of 20011244 is about 271.4926203159.

Adding to 20011244 its reverse (44211002), we get a palindrome (64222246).

The spelling of 20011244 in words is "twenty million, eleven thousand, two hundred forty-four".