44720000 has 160 divisors (see below), whose sum is σ = 122679480. Its totient is φ = 16128000.

The previous prime is 44719999. The next prime is 44720003. The reversal of 44720000 is 2744.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44720003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1039979 + ... + 1040021.

Almost surely, 2^44720000 is an apocalyptic number.

44720000 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 44720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61339740).

44720000 is an abundant number, since it is smaller than the sum of its proper divisors (77959480).

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

44720000 is an equidigital number, since it uses as much as digits as its factorization.

44720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 44720000 is about 6687.3013989202. The cubic root of 44720000 is about 354.9500690206.

Adding to 44720000 its reverse (2744), we get a palindrome (44722744).

The spelling of 44720000 in words is "forty-four million, seven hundred twenty thousand".