20001046 has 16 divisors (see below), whose sum is σ = 32841648. Its totient is φ = 9079200.

The previous prime is 20001031. The next prime is 20001067. The reversal of 20001046 is 64010002.

It is a super-3 number, since 3×20001046³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

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, 4720 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (2052603).

Almost surely, 2^20001046 is an apocalyptic number.

20001046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20001046 is a deficient number, since it is larger than the sum of its proper divisors (12840602).

20001046 is a wasteful number, since it uses less digits than its factorization.

20001046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12687.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20001046 is about 4472.2528998258. The cubic root of 20001046 is about 271.4464937117.

Adding to 20001046 its reverse (64010002), we get a palindrome (84011048).

The spelling of 20001046 in words is "twenty million, one thousand, forty-six".