20540274 has 8 divisors (see below), whose sum is σ = 41080560. Its totient is φ = 6846756.

The previous prime is 20540251. The next prime is 20540279. The reversal of 20540274 is 47204502.

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

20540274 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20540279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711684 + ... + 1711695.

It is an arithmetic number, because the mean of its divisors is an integer number (5135070).

Almost surely, 2^20540274 is an apocalyptic number.

20540274 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.

20540274 is a wasteful number, since it uses less digits than its factorization.

20540274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423384.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 20540274 is about 4532.1379061101. The cubic root of 20540274 is about 273.8642924686.

Adding to 20540274 its reverse (47204502), we get a palindrome (67744776).

The spelling of 20540274 in words is "twenty million, five hundred forty thousand, two hundred seventy-four".