80145240 has 128 divisors (see below), whose sum is σ = 278760960. Its totient is φ = 18054144.

The previous prime is 80145229. The next prime is 80145253. The reversal of 80145240 is 4254108.

80145240 = T₂₃₀ + T₂₃₁ + ... + T₇₈₉.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 80145240.

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, 60667 + ... + 61973.

It is an arithmetic number, because the mean of its divisors is an integer number (2177820).

Almost surely, 2^80145240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80145240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139380480).

80145240 is an abundant number, since it is smaller than the sum of its proper divisors (198615720).

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

80145240 is a wasteful number, since it uses less digits than its factorization.

80145240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 80145240 is about 8952.3873910818. The cubic root of 80145240 is about 431.1475387750.

Adding to 80145240 its reverse (4254108), we get a palindrome (84399348).

The spelling of 80145240 in words is "eighty million, one hundred forty-five thousand, two hundred forty".