20464434 has 32 divisors (see below), whose sum is σ = 47456640. Its totient is φ = 6524496.

The previous prime is 20464421. The next prime is 20464439. The reversal of 20464434 is 43446402.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20464398 and 20464407.

It is not an unprimeable number, because it can be changed into a prime (20464439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6997 + ... + 9480.

It is an arithmetic number, because the mean of its divisors is an integer number (1483020).

Almost surely, 2^20464434 is an apocalyptic number.

20464434 is an abundant number, since it is smaller than the sum of its proper divisors (26992206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20464434 is a wasteful number, since it uses less digits than its factorization.

20464434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16511 (or 16505 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 20464434 is about 4523.7632564050. The cubic root of 20464434 is about 273.5268175306.

The spelling of 20464434 in words is "twenty million, four hundred sixty-four thousand, four hundred thirty-four".