20252394 has 48 divisors (see below), whose sum is σ = 46096128. Its totient is φ = 6418656.

The previous prime is 20252381. The next prime is 20252447. The reversal of 20252394 is 49325202.

20252394 is a `hidden beast` number, since 20 + 252 + 394 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30979 + ... + 31625.

It is an arithmetic number, because the mean of its divisors is an integer number (960336).

Almost surely, 2^20252394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20252394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23048064).

20252394 is an abundant number, since it is smaller than the sum of its proper divisors (25843734).

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

20252394 is a wasteful number, since it uses less digits than its factorization.

20252394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20252394 is about 4500.2659921387. The cubic root of 20252394 is about 272.5788297033.

Adding to 20252394 its reverse (49325202), we get a palindrome (69577596).

The spelling of 20252394 in words is "twenty million, two hundred fifty-two thousand, three hundred ninety-four".