45320000 has 140 divisors (see below), whose sum is σ = 123785376. Its totient is φ = 16320000.

The previous prime is 45319999. The next prime is 45320003. The reversal of 45320000 is 2354.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45320003) 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 19 ways as a sum of consecutive naturals, for example, 439949 + ... + 440051.

Almost surely, 2^45320000 is an apocalyptic number.

45320000 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 45320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61892688).

45320000 is an abundant number, since it is smaller than the sum of its proper divisors (78465376).

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

45320000 is a wasteful number, since it uses less digits than its factorization.

45320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 45320000 is about 6732.0130718827. The cubic root of 45320000 is about 356.5304552611.

Adding to 45320000 its reverse (2354), we get a palindrome (45322354).

The spelling of 45320000 in words is "forty-five million, three hundred twenty thousand".