44545428 has 18 divisors (see below), whose sum is σ = 112601034. Its totient is φ = 14848464.

The previous prime is 44545409. The next prime is 44545439. The reversal of 44545428 is 82454544.

It can be written as a sum of positive squares in only one way, i.e., 27751824 + 16793604 = 5268^2 + 4098^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1237373 = 44545428 / (4 + 4 + 5 + 4 + 5 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 44545392 and 44545401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618651 + ... + 618722.

It is an arithmetic number, because the mean of its divisors is an integer number (6255613).

Almost surely, 2^44545428 is an apocalyptic number.

It is an amenable number.

44545428 is an abundant number, since it is smaller than the sum of its proper divisors (68055606).

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

44545428 is a wasteful number, since it uses less digits than its factorization.

44545428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237383 (or 1237378 counting only the distinct ones).

The product of its digits is 102400, while the sum is 36.

The square root of 44545428 is about 6674.2361360683. The cubic root of 44545428 is about 354.4875977314.

The spelling of 44545428 in words is "forty-four million, five hundred forty-five thousand, four hundred twenty-eight".