45444630 has 128 divisors (see below), whose sum is σ = 138018816. Its totient is φ = 9302400.

The previous prime is 45444613. The next prime is 45444631. The reversal of 45444630 is 3644454.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45444631) 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, 237835 + ... + 238025.

It is an arithmetic number, because the mean of its divisors is an integer number (1078272).

Almost surely, 2^45444630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45444630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69009408).

45444630 is an abundant number, since it is smaller than the sum of its proper divisors (92574186).

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

45444630 is a wasteful number, since it uses less digits than its factorization.

45444630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 45444630 is about 6741.2632347358. The cubic root of 45444630 is about 356.8569757174.

The spelling of 45444630 in words is "forty-five million, four hundred forty-four thousand, six hundred thirty".