20040032 has 12 divisors (see below), whose sum is σ = 39453876. Its totient is φ = 10020000.

The previous prime is 20039993. The next prime is 20040049. The reversal of 20040032 is 23004002.

It is a super-2 number, since 2×20040032² = 803205765122048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20039995 and 20040022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313094 + ... + 313157.

It is an arithmetic number, because the mean of its divisors is an integer number (3287823).

Almost surely, 2^20040032 is an apocalyptic number.

It is an amenable number.

20040032 is a deficient number, since it is larger than the sum of its proper divisors (19413844).

20040032 is an equidigital number, since it uses as much as digits as its factorization.

20040032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626261 (or 626253 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 20040032 is about 4476.6094312549. The cubic root of 20040032 is about 271.6227469032.

Adding to 20040032 its reverse (23004002), we get a palindrome (43044034).

The spelling of 20040032 in words is "twenty million, forty thousand, thirty-two".