43720272 has 30 divisors (see below), whose sum is σ = 122356442. Its totient is φ = 14573376.

The previous prime is 43720267. The next prime is 43720279. The reversal of 43720272 is 27202734.

It can be written as a sum of positive squares in only one way, i.e., 33454656 + 10265616 = 5784^2 + 3204^2 .

It is a super-2 number, since 2×43720272² = 3822924367507968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43720279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151663 + ... + 151950.

Almost surely, 2^43720272 is an apocalyptic number.

It is an amenable number.

43720272 is an abundant number, since it is smaller than the sum of its proper divisors (78636170).

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

43720272 is a wasteful number, since it uses less digits than its factorization.

43720272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303627 (or 303618 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 43720272 is about 6612.1306702152. The cubic root of 43720272 is about 352.2851081969.

The spelling of 43720272 in words is "forty-three million, seven hundred twenty thousand, two hundred seventy-two".