28156070 has 8 divisors (see below), whose sum is σ = 50680944. Its totient is φ = 11262424.

The previous prime is 28156067. The next prime is 28156123. The reversal of 28156070 is 7065182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407794 + ... + 1407813.

It is an arithmetic number, because the mean of its divisors is an integer number (6335118).

Almost surely, 2^28156070 is an apocalyptic number.

28156070 is a deficient number, since it is larger than the sum of its proper divisors (22524874).

28156070 is a wasteful number, since it uses less digits than its factorization.

28156070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815614.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 28156070 is about 5306.2293580282. The cubic root of 28156070 is about 304.2220431692. Note that the first 3 decimals are identical.

The spelling of 28156070 in words is "twenty-eight million, one hundred fifty-six thousand, seventy".