45043280 has 20 divisors (see below), whose sum is σ = 104725812. Its totient is φ = 18017280.

The previous prime is 45043277. The next prime is 45043289. The reversal of 45043280 is 8234054.

45043280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4999696 + 40043584 = 2236^2 + 6328^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45043289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281441 + ... + 281600.

Almost surely, 2^45043280 is an apocalyptic number.

45043280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45043280 is an abundant number, since it is smaller than the sum of its proper divisors (59682532).

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

45043280 is a wasteful number, since it uses less digits than its factorization.

45043280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563054 (or 563048 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 45043280 is about 6711.4290579578. The cubic root of 45043280 is about 355.8033252755.

The spelling of 45043280 in words is "forty-five million, forty-three thousand, two hundred eighty".