28070067 has 16 divisors (see below), whose sum is σ = 38021760. Its totient is φ = 18418752.

The previous prime is 28070047. The next prime is 28070069. The reversal of 28070067 is 76007082.

It is not a de Polignac number, because 28070067 - 2²⁴ = 11292851 is a prime.

It is a super-2 number, since 2×28070067² = 1575857322768978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28070069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66784 + ... + 67202.

It is an arithmetic number, because the mean of its divisors is an integer number (2376360).

Almost surely, 2^28070067 is an apocalyptic number.

28070067 is a deficient number, since it is larger than the sum of its proper divisors (9951693).

28070067 is a wasteful number, since it uses less digits than its factorization.

28070067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 28070067 is about 5298.1191945822. The cubic root of 28070067 is about 303.9119774878.

The spelling of 28070067 in words is "twenty-eight million, seventy thousand, sixty-seven".