45162240 has 144 divisors (see below), whose sum is σ = 152073600. Its totient is φ = 11390976.

The previous prime is 45162233. The next prime is 45162241. The reversal of 45162240 is 4226154.

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 45162240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45162241) 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, 72651 + ... + 73269.

Almost surely, 2^45162240 is an apocalyptic number.

45162240 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 45162240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76036800).

45162240 is an abundant number, since it is smaller than the sum of its proper divisors (106911360).

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

45162240 is a wasteful number, since it uses less digits than its factorization.

45162240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 45162240 is about 6720.2857082121. The cubic root of 45162240 is about 356.1162772972.

Adding to 45162240 its reverse (4226154), we get a palindrome (49388394).

The spelling of 45162240 in words is "forty-five million, one hundred sixty-two thousand, two hundred forty".