20502465 has 8 divisors (see below), whose sum is σ = 32803968. Its totient is φ = 10934640.

The previous prime is 20502401. The next prime is 20502479. The reversal of 20502465 is 56420502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20502465 - 2⁶ = 20502401 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 683401 + ... + 683430.

It is an arithmetic number, because the mean of its divisors is an integer number (4100496).

Almost surely, 2^20502465 is an apocalyptic number.

It is an amenable number.

20502465 is a deficient number, since it is larger than the sum of its proper divisors (12301503).

20502465 is a wasteful number, since it uses less digits than its factorization.

20502465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366839.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20502465 is about 4527.9647745980. The cubic root of 20502465 is about 273.6961529585.

Adding to 20502465 its reverse (56420502), we get a palindrome (76922967).

The spelling of 20502465 in words is "twenty million, five hundred two thousand, four hundred sixty-five".