20610342 has 16 divisors (see below), whose sum is σ = 45800880. Its totient is φ = 6870096.

The previous prime is 20610313. The next prime is 20610347. The reversal of 20610342 is 24301602.

It is a happy number.

20610342 is a `hidden beast` number, since 20 + 610 + 34 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20610347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190783 + ... + 190890.

It is an arithmetic number, because the mean of its divisors is an integer number (2862555).

Almost surely, 2^20610342 is an apocalyptic number.

20610342 is an abundant number, since it is smaller than the sum of its proper divisors (25190538).

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

20610342 is a wasteful number, since it uses less digits than its factorization.

20610342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381684 (or 381678 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20610342 is about 4539.8614516304. The cubic root of 20610342 is about 274.1753455226.

Adding to 20610342 its reverse (24301602), we get a palindrome (44911944).

The spelling of 20610342 in words is "twenty million, six hundred ten thousand, three hundred forty-two".