20436995 has 16 divisors (see below), whose sum is σ = 25961472. Its totient is φ = 15412320.

The previous prime is 20436979. The next prime is 20437019. The reversal of 20436995 is 59963402.

It is not a de Polignac number, because 20436995 - 2⁴ = 20436979 is a prime.

It is a Duffinian number.

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, 6914 + ... + 9416.

It is an arithmetic number, because the mean of its divisors is an integer number (1622592).

Almost surely, 2^20436995 is an apocalyptic number.

20436995 is a deficient number, since it is larger than the sum of its proper divisors (5524477).

20436995 is a wasteful number, since it uses less digits than its factorization.

20436995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 20436995 is about 4520.7294765336. The cubic root of 20436995 is about 273.4045133214.

The spelling of 20436995 in words is "twenty million, four hundred thirty-six thousand, nine hundred ninety-five".