45273240 has 96 divisors (see below), whose sum is σ = 149413680. Its totient is φ = 11886336.

The previous prime is 45273233. The next prime is 45273247. The reversal of 45273240 is 4237254.

It is an interprime number because it is at equal distance from previous prime (45273233) and next prime (45273247).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45273247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23182 + ... + 25058.

Almost surely, 2^45273240 is an apocalyptic number.

45273240 is a gapful number since it is divisible by the number (40) 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 45273240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74706840).

45273240 is an abundant number, since it is smaller than the sum of its proper divisors (104140440).

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

45273240 is a wasteful number, since it uses less digits than its factorization.

45273240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1954 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 45273240 is about 6728.5392173933. The cubic root of 45273240 is about 356.4077934410.

The spelling of 45273240 in words is "forty-five million, two hundred seventy-three thousand, two hundred forty".