45423000 has 288 divisors, whose sum is σ = 180329760. Its totient is φ = 10281600.

The previous prime is 45422987. The next prime is 45423023. The reversal of 45423000 is 32454.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 440949 + ... + 441051.

It is an arithmetic number, because the mean of its divisors is an integer number (626145).

Almost surely, 2^45423000 is an apocalyptic number.

45423000 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 45423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90164880).

45423000 is an abundant number, since it is smaller than the sum of its proper divisors (134906760).

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

45423000 is a wasteful number, since it uses less digits than its factorization.

45423000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 45423000 is about 6739.6587450701. The cubic root of 45423000 is about 356.8003497285.

Adding to 45423000 its reverse (32454), we get a palindrome (45455454).

The spelling of 45423000 in words is "forty-five million, four hundred twenty-three thousand".