20078266 has 32 divisors (see below), whose sum is σ = 34675200. Its totient is φ = 8648640.

The previous prime is 20078257. The next prime is 20078273. The reversal of 20078266 is 66287002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22945 + ... + 23803.

It is an arithmetic number, because the mean of its divisors is an integer number (1083600).

Almost surely, 2^20078266 is an apocalyptic number.

20078266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20078266 is a deficient number, since it is larger than the sum of its proper divisors (14596934).

20078266 is a wasteful number, since it uses less digits than its factorization.

20078266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20078266 is about 4480.8778157857. The cubic root of 20078266 is about 271.7953784722.

The spelling of 20078266 in words is "twenty million, seventy-eight thousand, two hundred sixty-six".