20424452 has 6 divisors (see below), whose sum is σ = 35742798. Its totient is φ = 10212224.

The previous prime is 20424431. The next prime is 20424491. The reversal of 20424452 is 25442402.

It can be written as a sum of positive squares in only one way, i.e., 19855936 + 568516 = 4456^2 + 754^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553053 + ... + 2553060.

It is an arithmetic number, because the mean of its divisors is an integer number (5957133).

Almost surely, 2^20424452 is an apocalyptic number.

It is an amenable number.

20424452 is a deficient number, since it is larger than the sum of its proper divisors (15318346).

20424452 is a wasteful number, since it uses less digits than its factorization.

20424452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106117 (or 5106115 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 20424452 is about 4519.3419875022. The cubic root of 20424452 is about 273.3485687852.

Adding to 20424452 its reverse (25442402), we get a palindrome (45866854).

The spelling of 20424452 in words is "twenty million, four hundred twenty-four thousand, four hundred fifty-two".