28106770 has 32 divisors (see below), whose sum is σ = 53001216. Its totient is φ = 10718400.

The previous prime is 28106737. The next prime is 28106779. The reversal of 28106770 is 7760182.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (28106779) 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, 21372 + ... + 22648.

It is an arithmetic number, because the mean of its divisors is an integer number (1656288).

Almost surely, 2^28106770 is an apocalyptic number.

28106770 is a deficient number, since it is larger than the sum of its proper divisors (24894446).

28106770 is a wasteful number, since it uses less digits than its factorization.

28106770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 28106770 is about 5301.5818394136. The cubic root of 28106770 is about 304.0443797743.

The spelling of 28106770 in words is "twenty-eight million, one hundred six thousand, seven hundred seventy".