44820729 has 16 divisors (see below), whose sum is σ = 67244800. Its totient is φ = 29500848.

The previous prime is 44820703. The next prime is 44820739. The reversal of 44820729 is 92702844.

44820729 is a `hidden beast` number, since 448 + 207 + 2 + 9 = 666.

It is not a de Polignac number, because 44820729 - 2⁵ = 44820697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44820693 and 44820702.

It is not an unprimeable number, because it can be changed into a prime (44820739) 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, 8374 + ... + 12639.

It is an arithmetic number, because the mean of its divisors is an integer number (4202800).

Almost surely, 2^44820729 is an apocalyptic number.

It is an amenable number.

44820729 is a deficient number, since it is larger than the sum of its proper divisors (22424071).

44820729 is a wasteful number, since it uses less digits than its factorization.

44820729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21101 (or 21095 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 44820729 is about 6694.8285265569. The cubic root of 44820729 is about 355.2163701139.

The spelling of 44820729 in words is "forty-four million, eight hundred twenty thousand, seven hundred twenty-nine".