20465834 has 4 divisors (see below), whose sum is σ = 30698754. Its totient is φ = 10232916.

The previous prime is 20465833. The next prime is 20465839. The reversal of 20465834 is 43856402.

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

It can be written as a sum of positive squares in only one way, i.e., 14478025 + 5987809 = 3805^2 + 2447^2 .

It is a super-2 number, since 2×20465834² = 837700722631112, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20465834.

It is not an unprimeable number, because it can be changed into a prime (20465833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5116457 + ... + 5116460.

Almost surely, 2^20465834 is an apocalyptic number.

20465834 is a deficient number, since it is larger than the sum of its proper divisors (10232920).

20465834 is a wasteful number, since it uses less digits than its factorization.

20465834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232919.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 20465834 is about 4523.9179921833. The cubic root of 20465834 is about 273.5330548367.

The spelling of 20465834 in words is "twenty million, four hundred sixty-five thousand, eight hundred thirty-four".