45442944 has 112 divisors (see below), whose sum is σ = 136012920. Its totient is φ = 15116544.

The previous prime is 45442939. The next prime is 45442949. The reversal of 45442944 is 44924454.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45442939) and next prime (45442949).

It is a super-2 number, since 2×45442944² = 4130122318774272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 45442899 and 45442908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45442949) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 93069 + ... + 93555.

Almost surely, 2^45442944 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 45442944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68006460).

45442944 is an abundant number, since it is smaller than the sum of its proper divisors (90569976).

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

45442944 is an frugal number, since it uses more digits than its factorization.

45442944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 492 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 45442944 is about 6741.1381828294. The cubic root of 45442944 is about 356.8525625205.

The spelling of 45442944 in words is "forty-five million, four hundred forty-two thousand, nine hundred forty-four".