45373640 has 32 divisors (see below), whose sum is σ = 109945080. Its totient is φ = 16753152.

The previous prime is 45373639. The next prime is 45373649. The reversal of 45373640 is 4637354.

It can be written as a sum of positive squares in 4 ways, for example, as 13586596 + 31787044 = 3686^2 + 5638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45373597 and 45373606.

It is not an unprimeable number, because it can be changed into a prime (45373649) 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 7 ways as a sum of consecutive naturals, for example, 43109 + ... + 44148.

Almost surely, 2^45373640 is an apocalyptic number.

45373640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45373640 is an abundant number, since it is smaller than the sum of its proper divisors (64571440).

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

45373640 is a wasteful number, since it uses less digits than its factorization.

45373640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87281 (or 87277 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 45373640 is about 6735.9958432291. The cubic root of 45373640 is about 356.6710609798.

The spelling of 45373640 in words is "forty-five million, three hundred seventy-three thousand, six hundred forty".