45032440 has 16 divisors (see below), whose sum is σ = 101323080. Its totient is φ = 18012960.

The previous prime is 45032437. The next prime is 45032453. The reversal of 45032440 is 4423054.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562866 + ... + 562945.

Almost surely, 2^45032440 is an apocalyptic number.

45032440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45032440 is an abundant number, since it is smaller than the sum of its proper divisors (56290640).

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

45032440 is a wasteful number, since it uses less digits than its factorization.

45032440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125822 (or 1125818 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 45032440 is about 6710.6214317304. The cubic root of 45032440 is about 355.7747807476.

Adding to 45032440 its reverse (4423054), we get a palindrome (49455494).

The spelling of 45032440 in words is "forty-five million, thirty-two thousand, four hundred forty".