45230640 has 320 divisors, whose sum is σ = 183321600. Its totient is φ = 8957952.

The previous prime is 45230611. The next prime is 45230641. The reversal of 45230640 is 4603254.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 45230640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45230641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 414906 + ... + 415014.

It is an arithmetic number, because the mean of its divisors is an integer number (572880).

Almost surely, 2^45230640 is an apocalyptic number.

45230640 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 45230640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91660800).

45230640 is an abundant number, since it is smaller than the sum of its proper divisors (138090960).

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

45230640 is a wasteful number, since it uses less digits than its factorization.

45230640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 45230640 is about 6725.3728521176. The cubic root of 45230640 is about 356.2959706759.

Adding to 45230640 its reverse (4603254), we get a palindrome (49833894).

The spelling of 45230640 in words is "forty-five million, two hundred thirty thousand, six hundred forty".