4156072 has 8 divisors (see below), whose sum is σ = 7792650. Its totient is φ = 2078032.

The previous prime is 4156063. The next prime is 4156073. The reversal of 4156072 is 2706514.

It can be written as a sum of positive squares in only one way, i.e., 3556996 + 599076 = 1886^2 + 774^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (4156073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259747 + ... + 259762.

Almost surely, 2^4156072 is an apocalyptic number.

It is an amenable number.

4156072 is a deficient number, since it is larger than the sum of its proper divisors (3636578).

4156072 is a wasteful number, since it uses less digits than its factorization.

4156072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519515 (or 519511 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 4156072 is about 2038.6446477991. The cubic root of 4156072 is about 160.7783944966.

The spelling of 4156072 in words is "four million, one hundred fifty-six thousand, seventy-two".