872235420440 has 16 divisors (see below), whose sum is σ = 1962529696080. Its totient is φ = 348894168160.

The previous prime is 872235420409. The next prime is 872235420449. The reversal of 872235420440 is 44024532278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872235420449) 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, 10902942716 + ... + 10902942795.

It is an arithmetic number, because the mean of its divisors is an integer number (122658106005).

Almost surely, 2^872235420440 is an apocalyptic number.

It is an amenable number.

872235420440 is an abundant number, since it is smaller than the sum of its proper divisors (1090294275640).

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

872235420440 is a wasteful number, since it uses less digits than its factorization.

872235420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21805885522 (or 21805885518 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 41.

The spelling of 872235420440 in words is "eight hundred seventy-two billion, two hundred thirty-five million, four hundred twenty thousand, four hundred forty".