20863734 has 8 divisors (see below), whose sum is σ = 41727480. Its totient is φ = 6954576.

The previous prime is 20863727. The next prime is 20863747. The reversal of 20863734 is 43736802.

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

20863734 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20863695 and 20863704.

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, 1738639 + ... + 1738650.

It is an arithmetic number, because the mean of its divisors is an integer number (5215935).

Almost surely, 2^20863734 is an apocalyptic number.

20863734 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.

20863734 is a wasteful number, since it uses less digits than its factorization.

20863734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3477294.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 20863734 is about 4567.6836580481. The cubic root of 20863734 is about 275.2943800784.

The spelling of 20863734 in words is "twenty million, eight hundred sixty-three thousand, seven hundred thirty-four".