20083278 has 16 divisors (see below), whose sum is σ = 41913216. Its totient is φ = 6403320.

The previous prime is 20083277. The next prime is 20083289. The reversal of 20083278 is 87238002.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20083277) 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, 72628 + ... + 72903.

It is an arithmetic number, because the mean of its divisors is an integer number (2619576).

Almost surely, 2^20083278 is an apocalyptic number.

20083278 is an abundant number, since it is smaller than the sum of its proper divisors (21829938).

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

20083278 is a wasteful number, since it uses less digits than its factorization.

20083278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145559.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20083278 is about 4481.4370463056. The cubic root of 20083278 is about 271.8179920635.

The spelling of 20083278 in words is "twenty million, eighty-three thousand, two hundred seventy-eight".