20490352 has 20 divisors (see below), whose sum is σ = 39774240. Its totient is φ = 10226048.

The previous prime is 20490347. The next prime is 20490367. The reversal of 20490352 is 25309402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12153 + ... + 13735.

It is an arithmetic number, because the mean of its divisors is an integer number (1988712).

Almost surely, 2^20490352 is an apocalyptic number.

It is an amenable number.

20490352 is a deficient number, since it is larger than the sum of its proper divisors (19283888).

20490352 is a wasteful number, since it uses less digits than its factorization.

20490352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400 (or 2394 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20490352 is about 4526.6270003171. The cubic root of 20490352 is about 273.6422418050.

Adding to 20490352 its reverse (25309402), we get a palindrome (45799754).

The spelling of 20490352 in words is "twenty million, four hundred ninety thousand, three hundred fifty-two".