44747820 has 108 divisors (see below), whose sum is σ = 147079296. Its totient is φ = 11007360.

The previous prime is 44747779. The next prime is 44747861. The reversal of 44747820 is 2874744.

It is an interprime number because it is at equal distance from previous prime (44747779) and next prime (44747861).

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).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29685 + ... + 31155.

Almost surely, 2^44747820 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 44747820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73539648).

44747820 is an abundant number, since it is smaller than the sum of its proper divisors (102331476).

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

44747820 is a wasteful number, since it uses less digits than its factorization.

44747820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 44747820 is about 6689.3811372951. The cubic root of 44747820 is about 355.0236577502.

The spelling of 44747820 in words is "forty-four million, seven hundred forty-seven thousand, eight hundred twenty".