45821568 has 128 divisors (see below), whose sum is σ = 134003520. Its totient is φ = 13787136.

The previous prime is 45821563. The next prime is 45821591. The reversal of 45821568 is 86512854.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (45821563) 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, 334396 + ... + 334532.

Almost surely, 2^45821568 is an apocalyptic number.

45821568 is a gapful number since it is divisible by the number (48) 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 45821568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67001760).

45821568 is an abundant number, since it is smaller than the sum of its proper divisors (88181952).

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

45821568 is a wasteful number, since it uses less digits than its factorization.

45821568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 222 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 45821568 is about 6769.1630206400. The cubic root of 45821568 is about 357.8409038924.

The spelling of 45821568 in words is "forty-five million, eight hundred twenty-one thousand, five hundred sixty-eight".