20346436 has 12 divisors (see below), whose sum is σ = 38843280. Its totient is φ = 9248360.

The previous prime is 20346427. The next prime is 20346437. The reversal of 20346436 is 63464302.

It is not an unprimeable number, because it can be changed into a prime (20346437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231166 + ... + 231253.

It is an arithmetic number, because the mean of its divisors is an integer number (3236940).

Almost surely, 2^20346436 is an apocalyptic number.

It is an amenable number.

20346436 is a deficient number, since it is larger than the sum of its proper divisors (18496844).

20346436 is a wasteful number, since it uses less digits than its factorization.

20346436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462434 (or 462432 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 20346436 is about 4510.7023843300. The cubic root of 20346436 is about 273.0000849781. Note that the first 4 decimals are identical.

The spelling of 20346436 in words is "twenty million, three hundred forty-six thousand, four hundred thirty-six".