20519334 has 48 divisors (see below), whose sum is σ = 50079744. Its totient is φ = 6015600.

The previous prime is 20519333. The next prime is 20519339. The reversal of 20519334 is 43391502.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20519298 and 20519307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20519333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4467 + ... + 7809.

It is an arithmetic number, because the mean of its divisors is an integer number (1043328).

Almost surely, 2^20519334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20519334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25039872).

20519334 is an abundant number, since it is smaller than the sum of its proper divisors (29560410).

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

20519334 is a wasteful number, since it uses less digits than its factorization.

20519334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393 (or 3390 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20519334 is about 4529.8271490201. The cubic root of 20519334 is about 273.7711962070.

The spelling of 20519334 in words is "twenty million, five hundred nineteen thousand, three hundred thirty-four".