20342350 has 108 divisors (see below), whose sum is σ = 48472344. Its totient is φ = 6320160.

The previous prime is 20342347. The next prime is 20342351. The reversal of 20342350 is 5324302.

It is a super-2 number, since 2×20342350² = 827622407045000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342351) 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 53 ways as a sum of consecutive naturals, for example, 884439 + ... + 884461.

It is an arithmetic number, because the mean of its divisors is an integer number (448818).

Almost surely, 2^20342350 is an apocalyptic number.

20342350 is an abundant number, since it is smaller than the sum of its proper divisors (28129994).

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

20342350 is a wasteful number, since it uses less digits than its factorization.

20342350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20342350 is about 4510.2494387783. The cubic root of 20342350 is about 272.9818090005.

Adding to 20342350 its reverse (5324302), we get a palindrome (25666652).

The spelling of 20342350 in words is "twenty million, three hundred forty-two thousand, three hundred fifty".