20113465 has 16 divisors (see below), whose sum is σ = 26155008. Its totient is φ = 14789376.

The previous prime is 20113453. The next prime is 20113481. The reversal of 20113465 is 56431102.

20113465 = T₆₄₅ + T₆₄₆ + ... + T₇₂₉.

It is a cyclic number.

It is not a de Polignac number, because 20113465 - 2⁵ = 20113433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904 + ... + 6406.

It is an arithmetic number, because the mean of its divisors is an integer number (1634688).

Almost surely, 2^20113465 is an apocalyptic number.

It is an amenable number.

20113465 is a deficient number, since it is larger than the sum of its proper divisors (6041543).

20113465 is a wasteful number, since it uses less digits than its factorization.

20113465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20113465 is about 4484.8037861204. The cubic root of 20113465 is about 271.9541129700.

Adding to 20113465 its reverse (56431102), we get a palindrome (76544567).

It can be divided in two parts, 2011 and 3465, that added together give a square (5476 = 74²).

The spelling of 20113465 in words is "twenty million, one hundred thirteen thousand, four hundred sixty-five".