44742720 has 224 divisors, whose sum is σ = 163860480. Its totient is φ = 10229760.

The previous prime is 44742713. The next prime is 44742743. The reversal of 44742720 is 2724744.

It is a Cunningham number, because it is equal to 6689²-1.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200529 + ... + 200751.

It is an arithmetic number, because the mean of its divisors is an integer number (731520).

Almost surely, 2^44742720 is an apocalyptic number.

44742720 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 44742720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81930240).

44742720 is an abundant number, since it is smaller than the sum of its proper divisors (119117760).

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

44742720 is a wasteful number, since it uses less digits than its factorization.

44742720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 44742720 is about 6688.9999252504. Note that the first 4 decimals coincide. The cubic root of 44742720 is about 355.0101696485.

The spelling of 44742720 in words is "forty-four million, seven hundred forty-two thousand, seven hundred twenty".