45943440 has 80 divisors (see below), whose sum is σ = 145490688. Its totient is φ = 11987968.

The previous prime is 45943439. The next prime is 45943451. The reversal of 45943440 is 4434954.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×45943440² = 4221599358067200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9244 + ... + 13316.

Almost surely, 2^45943440 is an apocalyptic number.

45943440 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 45943440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72745344).

45943440 is an abundant number, since it is smaller than the sum of its proper divisors (99547248).

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

45943440 is a wasteful number, since it uses less digits than its factorization.

45943440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136 (or 4130 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 45943440 is about 6778.1590420999. The cubic root of 45943440 is about 358.1578738375.

The spelling of 45943440 in words is "forty-five million, nine hundred forty-three thousand, four hundred forty".