45102320 has 40 divisors (see below), whose sum is σ = 106313136. Its totient is φ = 17791488.

The previous prime is 45102307. The next prime is 45102349. The reversal of 45102320 is 2320154.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1979 + ... + 9701.

Almost surely, 2^45102320 is an apocalyptic number.

45102320 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 45102320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53156568).

45102320 is an abundant number, since it is smaller than the sum of its proper divisors (61210816).

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

45102320 is a wasteful number, since it uses less digits than its factorization.

45102320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7809 (or 7803 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 45102320 is about 6715.8260847047. The cubic root of 45102320 is about 355.9587125455.

Adding to 45102320 its reverse (2320154), we get a palindrome (47422474).

The spelling of 45102320 in words is "forty-five million, one hundred two thousand, three hundred twenty".