20243492 has 6 divisors (see below), whose sum is σ = 35426118. Its totient is φ = 10121744.

The previous prime is 20243471. The next prime is 20243501. The reversal of 20243492 is 29434202.

It can be written as a sum of positive squares in only one way, i.e., 19149376 + 1094116 = 4376^2 + 1046^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530433 + ... + 2530440.

It is an arithmetic number, because the mean of its divisors is an integer number (5904353).

Almost surely, 2^20243492 is an apocalyptic number.

It is an amenable number.

20243492 is a deficient number, since it is larger than the sum of its proper divisors (15182626).

20243492 is a wasteful number, since it uses less digits than its factorization.

20243492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060877 (or 5060875 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20243492 is about 4499.2768307807. The cubic root of 20243492 is about 272.5388862386.

Adding to 20243492 its reverse (29434202), we get a palindrome (49677694).

The spelling of 20243492 in words is "twenty million, two hundred forty-three thousand, four hundred ninety-two".