20513294 has 8 divisors (see below), whose sum is σ = 31012608. Its totient is φ = 10175760.

The previous prime is 20513267. The next prime is 20513299. The reversal of 20513294 is 49231502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20513299) 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, 40127 + ... + 40634.

It is an arithmetic number, because the mean of its divisors is an integer number (3876576).

Almost surely, 2^20513294 is an apocalyptic number.

20513294 is a deficient number, since it is larger than the sum of its proper divisors (10499314).

20513294 is a wasteful number, since it uses less digits than its factorization.

20513294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80890.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20513294 is about 4529.1604078460. The cubic root of 20513294 is about 273.7443314576.

Adding to 20513294 its reverse (49231502), we get a palindrome (69744796).

The spelling of 20513294 in words is "twenty million, five hundred thirteen thousand, two hundred ninety-four".