20143004 has 12 divisors (see below), whose sum is σ = 40286064. Its totient is φ = 8632704.

The previous prime is 20142959. The next prime is 20143007. The reversal of 20143004 is 40034102.

20143004 is an admirable number.

It is a super-2 number, since 2×20143004² = 811481220288032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 20143004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143007) 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, 359669 + ... + 359724.

It is an arithmetic number, because the mean of its divisors is an integer number (3357172).

Almost surely, 2^20143004 is an apocalyptic number.

It is an amenable number.

20143004 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.

20143004 is a wasteful number, since it uses less digits than its factorization.

20143004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719404 (or 719402 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20143004 is about 4488.0958100290. The cubic root of 20143004 is about 272.0871800995.

Adding to 20143004 its reverse (40034102), we get a palindrome (60177106).

The spelling of 20143004 in words is "twenty million, one hundred forty-three thousand, four".