20519294 has 4 divisors (see below), whose sum is σ = 30778944. Its totient is φ = 10259646.

The previous prime is 20519293. The next prime is 20519309. The reversal of 20519294 is 49291502.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20519294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20519293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5129822 + ... + 5129825.

It is an arithmetic number, because the mean of its divisors is an integer number (7694736).

Almost surely, 2^20519294 is an apocalyptic number.

20519294 is a deficient number, since it is larger than the sum of its proper divisors (10259650).

20519294 is a wasteful number, since it uses less digits than its factorization.

20519294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10259649.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 20519294 is about 4529.8227338385. The cubic root of 20519294 is about 273.7710183121.

The spelling of 20519294 in words is "twenty million, five hundred nineteen thousand, two hundred ninety-four".