802111440 has 160 divisors (see below), whose sum is σ = 2689577856. Its totient is φ = 196577280.

The previous prime is 802111423. The next prime is 802111451. The reversal of 802111440 is 44111208.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 988635 + ... + 989445.

Almost surely, 2^802111440 is an apocalyptic number.

802111440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 802111440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1344788928).

802111440 is an abundant number, since it is smaller than the sum of its proper divisors (1887466416).

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

802111440 is a wasteful number, since it uses less digits than its factorization.

802111440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 802111440 is about 28321.5719902692. The cubic root of 802111440 is about 929.1337522934.

Adding to 802111440 its reverse (44111208), we get a palindrome (846222648).

The spelling of 802111440 in words is "eight hundred two million, one hundred eleven thousand, four hundred forty".