210438628040 has 64 divisors (see below), whose sum is σ = 488839518720. Its totient is φ = 81446976000.

The previous prime is 210438628027. The next prime is 210438628051. The reversal of 210438628040 is 40826834012.

It is a junction number, because it is equal to n+sod(n) for n = 210438627985 and 210438628003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11759900 + ... + 11777780.

It is an arithmetic number, because the mean of its divisors is an integer number (7638117480).

Almost surely, 2^210438628040 is an apocalyptic number.

210438628040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210438628040 is an abundant number, since it is smaller than the sum of its proper divisors (278400890680).

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

210438628040 is a wasteful number, since it uses less digits than its factorization.

210438628040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27414 (or 27410 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The spelling of 210438628040 in words is "two hundred ten billion, four hundred thirty-eight million, six hundred twenty-eight thousand, forty".