45403220 has 48 divisors (see below), whose sum is σ = 99982848. Its totient is φ = 17297280.

The previous prime is 45403177. The next prime is 45403223. The reversal of 45403220 is 2230454.

It is a super-2 number, since 2×45403220² = 4122904772736800, which contains 22 as substring.

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

45403220 is a Rhonda number in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 45403192 and 45403201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45403223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40994 + ... + 42086.

It is an arithmetic number, because the mean of its divisors is an integer number (2082976).

Almost surely, 2^45403220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45403220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49991424).

45403220 is an abundant number, since it is smaller than the sum of its proper divisors (54579628).

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

45403220 is a wasteful number, since it uses less digits than its factorization.

45403220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 45403220 is about 6738.1911519339. The cubic root of 45403220 is about 356.7485511860.

Adding to 45403220 its reverse (2230454), we get a palindrome (47633674).

The spelling of 45403220 in words is "forty-five million, four hundred three thousand, two hundred twenty".