20346249 has 16 divisors (see below), whose sum is σ = 33822720. Its totient is φ = 10569360.

The previous prime is 20346247. The next prime is 20346251. The reversal of 20346249 is 94264302.

It is an interprime number because it is at equal distance from previous prime (20346247) and next prime (20346251).

It is not a de Polignac number, because 20346249 - 2¹ = 20346247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20346247) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43809 + ... + 44270.

It is an arithmetic number, because the mean of its divisors is an integer number (2113920).

Almost surely, 2^20346249 is an apocalyptic number.

It is an amenable number.

20346249 is a deficient number, since it is larger than the sum of its proper divisors (13476471).

20346249 is a wasteful number, since it uses less digits than its factorization.

20346249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88100.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20346249 is about 4510.6816558033. The cubic root of 20346249 is about 272.9992486126. Note that the first 3 decimals are identical.

The spelling of 20346249 in words is "twenty million, three hundred forty-six thousand, two hundred forty-nine".