20070628040 has 32 divisors (see below), whose sum is σ = 45180495360. Its totient is φ = 8024414400.

The previous prime is 20070628037. The next prime is 20070628049. The reversal of 20070628040 is 4082607002.

It is a junction number, because it is equal to n+sod(n) for n = 20070627994 and 20070628012.

It is not an unprimeable number, because it can be changed into a prime (20070628049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34406 + ... + 203285.

It is an arithmetic number, because the mean of its divisors is an integer number (1411890480).

Almost surely, 2^20070628040 is an apocalyptic number.

20070628040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20070628040 is an abundant number, since it is smaller than the sum of its proper divisors (25109867320).

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

20070628040 is a wasteful number, since it uses less digits than its factorization.

20070628040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239813 (or 239809 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

It can be divided in two parts, 2007062 and 8040, that added together give a palindrome (2015102).

The spelling of 20070628040 in words is "twenty billion, seventy million, six hundred twenty-eight thousand, forty".