45015320 has 128 divisors (see below), whose sum is σ = 125712000. Its totient is φ = 14450688.

The previous prime is 45015319. The next prime is 45015329. The reversal of 45015320 is 2351054.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 45015292 and 45015301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45015329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233144 + ... + 233336.

It is an arithmetic number, because the mean of its divisors is an integer number (982125).

Almost surely, 2^45015320 is an apocalyptic number.

45015320 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 45015320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62856000).

45015320 is an abundant number, since it is smaller than the sum of its proper divisors (80696680).

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

45015320 is a wasteful number, since it uses less digits than its factorization.

45015320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 45015320 is about 6709.3457207093. The cubic root of 45015320 is about 355.7296900215.

Adding to 45015320 its reverse (2351054), we get a palindrome (47366374).

The spelling of 45015320 in words is "forty-five million, fifteen thousand, three hundred twenty".