20513334 has 8 divisors (see below), whose sum is σ = 41026680. Its totient is φ = 6837776.

The previous prime is 20513327. The next prime is 20513341. The reversal of 20513334 is 43331502.

It is an interprime number because it is at equal distance from previous prime (20513327) and next prime (20513341).

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

20513334 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 20513334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709439 + ... + 1709450.

It is an arithmetic number, because the mean of its divisors is an integer number (5128335).

Almost surely, 2^20513334 is an apocalyptic number.

20513334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20513334 is a wasteful number, since it uses less digits than its factorization.

20513334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418894.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20513334 is about 4529.1648236733. The cubic root of 20513334 is about 273.7445093872.

Adding to 20513334 its reverse (43331502), we get a palindrome (63844836).

The spelling of 20513334 in words is "twenty million, five hundred thirteen thousand, three hundred thirty-four".