43478272 has 18 divisors (see below), whose sum is σ = 86787218. Its totient is φ = 21739008.

The previous prime is 43478269. The next prime is 43478291. The reversal of 43478272 is 27287434.

It can be written as a sum of positive squares in only one way, i.e., 32080896 + 11397376 = 5664^2 + 3376^2 .

It is a super-2 number, since 2×43478272² = 3780720272211968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84663 + ... + 85174.

Almost surely, 2^43478272 is an apocalyptic number.

It is an amenable number.

43478272 is a deficient number, since it is larger than the sum of its proper divisors (43308946).

43478272 is an equidigital number, since it uses as much as digits as its factorization.

43478272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169853 (or 169839 counting only the distinct ones).

The product of its digits is 75264, while the sum is 37.

The square root of 43478272 is about 6593.8055779648. The cubic root of 43478272 is about 351.6339169230.

The spelling of 43478272 in words is "forty-three million, four hundred seventy-eight thousand, two hundred seventy-two".