20524492 has 12 divisors (see below), whose sum is σ = 36888880. Its totient is φ = 9984816.

The previous prime is 20524451. The next prime is 20524499. The reversal of 20524492 is 29442502.

It is a self number, because there is not a number n which added to its sum of digits gives 20524492.

It is not an unprimeable number, because it can be changed into a prime (20524499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69192 + ... + 69487.

Almost surely, 2^20524492 is an apocalyptic number.

It is an amenable number.

20524492 is a deficient number, since it is larger than the sum of its proper divisors (16364388).

20524492 is a wasteful number, since it uses less digits than its factorization.

20524492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138720 (or 138718 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20524492 is about 4530.3964506431. The cubic root of 20524492 is about 273.7941338183.

Adding to 20524492 its reverse (29442502), we get a palindrome (49966994).

The spelling of 20524492 in words is "twenty million, five hundred twenty-four thousand, four hundred ninety-two".