20694534 has 32 divisors (see below), whose sum is σ = 49793280. Its totient is φ = 5601312.

The previous prime is 20694533. The next prime is 20694571. The reversal of 20694534 is 43549602.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20694495 and 20694504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20694533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12169 + ... + 13764.

It is an arithmetic number, because the mean of its divisors is an integer number (1556040).

Almost surely, 2^20694534 is an apocalyptic number.

20694534 is an abundant number, since it is smaller than the sum of its proper divisors (29098746).

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

20694534 is a wasteful number, since it uses less digits than its factorization.

20694534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25964.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 20694534 is about 4549.1245311598. The cubic root of 20694534 is about 274.5481682287.

The spelling of 20694534 in words is "twenty million, six hundred ninety-four thousand, five hundred thirty-four".