43672720 has 120 divisors (see below), whose sum is σ = 127351224. Its totient is φ = 13805568.

The previous prime is 43672693. The next prime is 43672763. The reversal of 43672720 is 2727634.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6071296 + 37601424 = 2464^2 + 6132^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50532 + ... + 51388.

Almost surely, 2^43672720 is an apocalyptic number.

43672720 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 43672720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63675612).

43672720 is an abundant number, since it is smaller than the sum of its proper divisors (83678504).

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

43672720 is a wasteful number, since it uses less digits than its factorization.

43672720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 43672720 is about 6608.5338767385. The cubic root of 43672720 is about 352.1573418488.

The spelling of 43672720 in words is "forty-three million, six hundred seventy-two thousand, seven hundred twenty".