20913038 has 8 divisors (see below), whose sum is σ = 31766880. Its totient is φ = 10324080.

The previous prime is 20913037. The next prime is 20913059. The reversal of 20913038 is 83031902.

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

It is a junction number, because it is equal to n+sod(n) for n = 20912998 and 20913016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20913037) 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, 66023 + ... + 66338.

It is an arithmetic number, because the mean of its divisors is an integer number (3970860).

Almost surely, 2^20913038 is an apocalyptic number.

20913038 is a deficient number, since it is larger than the sum of its proper divisors (10853842).

20913038 is a wasteful number, since it uses less digits than its factorization.

20913038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132442.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20913038 is about 4573.0775195704. The cubic root of 20913038 is about 275.5110628702.

The spelling of 20913038 in words is "twenty million, nine hundred thirteen thousand, thirty-eight".