20514490 has 16 divisors (see below), whose sum is σ = 38869920. Its totient is φ = 7773840.

The previous prime is 20514457. The next prime is 20514497. The reversal of 20514490 is 9441502.

It is not an unprimeable number, because it can be changed into a prime (20514497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53796 + ... + 54175.

It is an arithmetic number, because the mean of its divisors is an integer number (2429370).

Almost surely, 2^20514490 is an apocalyptic number.

20514490 is a deficient number, since it is larger than the sum of its proper divisors (18355430).

20514490 is a wasteful number, since it uses less digits than its factorization.

20514490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107997.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 20514490 is about 4529.2924392227. The cubic root of 20514490 is about 273.7496514525.

Adding to 20514490 its reverse (9441502), we get a palindrome (29955992).

The spelling of 20514490 in words is "twenty million, five hundred fourteen thousand, four hundred ninety".