20345862 has 8 divisors (see below), whose sum is σ = 40691736. Its totient is φ = 6781952.

The previous prime is 20345839. The next prime is 20345863. The reversal of 20345862 is 26854302.

It is a sphenic number, since it is the product of 3 distinct primes.

20345862 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695483 + ... + 1695494.

It is an arithmetic number, because the mean of its divisors is an integer number (5086467).

Almost surely, 2^20345862 is an apocalyptic number.

20345862 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20345862 is a wasteful number, since it uses less digits than its factorization.

20345862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390982.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 20345862 is about 4510.6387574267. The cubic root of 20345862 is about 272.9975177222.

The spelling of 20345862 in words is "twenty million, three hundred forty-five thousand, eight hundred sixty-two".