20146386 has 32 divisors (see below), whose sum is σ = 43662528. Its totient is φ = 6160320.

The previous prime is 20146381. The next prime is 20146393. The reversal of 20146386 is 68364102.

It is not an unprimeable number, because it can be changed into a prime (20146381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13405 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (1364454).

Almost surely, 2^20146386 is an apocalyptic number.

20146386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20146386 is an abundant number, since it is smaller than the sum of its proper divisors (23516142).

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

20146386 is a wasteful number, since it uses less digits than its factorization.

20146386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20146386 is about 4488.4725687031. The cubic root of 20146386 is about 272.1024070131.

The spelling of 20146386 in words is "twenty million, one hundred forty-six thousand, three hundred eighty-six".