28078070 has 16 divisors (see below), whose sum is σ = 51150960. Its totient is φ = 11095584.

The previous prime is 28078051. The next prime is 28078081. The reversal of 28078070 is 7087082.

It is a happy number.

28078070 is nontrivially palindromic in base 9.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16085 + ... + 17744.

It is an arithmetic number, because the mean of its divisors is an integer number (3196935).

Almost surely, 2^28078070 is an apocalyptic number.

28078070 is a deficient number, since it is larger than the sum of its proper divisors (23072890).

28078070 is a wasteful number, since it uses less digits than its factorization.

28078070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33919.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 28078070 is about 5298.8744087778. The cubic root of 28078070 is about 303.9408573197.

The spelling of 28078070 in words is "twenty-eight million, seventy-eight thousand, seventy".