20342274 has 16 divisors (see below), whose sum is σ = 42826080. Its totient is φ = 6423840.

The previous prime is 20342269. The next prime is 20342303. The reversal of 20342274 is 47224302.

It is a super-2 number, since 2×20342274² = 827616222982152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89107 + ... + 89334.

It is an arithmetic number, because the mean of its divisors is an integer number (2676630).

Almost surely, 2^20342274 is an apocalyptic number.

20342274 is an abundant number, since it is smaller than the sum of its proper divisors (22483806).

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

20342274 is a wasteful number, since it uses less digits than its factorization.

20342274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178465.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 20342274 is about 4510.2410135158. The cubic root of 20342274 is about 272.9814690423.

Adding to 20342274 its reverse (47224302), we get a palindrome (67566576).

The spelling of 20342274 in words is "twenty million, three hundred forty-two thousand, two hundred seventy-four".