80269440 has 128 divisors (see below), whose sum is σ = 259096320. Its totient is φ = 21135360.

The previous prime is 80269439. The next prime is 80269457. The reversal of 80269440 is 4496208.

It is a tau number, because it is divible by the number of its divisors (128).

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, 186025 + ... + 186455.

It is an arithmetic number, because the mean of its divisors is an integer number (2024190).

Almost surely, 2^80269440 is an apocalyptic number.

80269440 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 80269440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129548160).

80269440 is an abundant number, since it is smaller than the sum of its proper divisors (178826880).

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

80269440 is a wasteful number, since it uses less digits than its factorization.

80269440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 80269440 is about 8959.3214028742. The cubic root of 80269440 is about 431.3701383412.

The spelling of 80269440 in words is "eighty million, two hundred sixty-nine thousand, four hundred forty".