28070712 has 40 divisors (see below), whose sum is σ = 78625800. Its totient is φ = 9356688.

The previous prime is 28070681. The next prime is 28070737. The reversal of 28070712 is 21707082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21012 + ... + 22307.

It is an arithmetic number, because the mean of its divisors is an integer number (1965645).

Almost surely, 2^28070712 is an apocalyptic number.

It is an amenable number.

28070712 is an abundant number, since it is smaller than the sum of its proper divisors (50555088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28070712 is a wasteful number, since it uses less digits than its factorization.

28070712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43337 (or 43324 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 28070712 is about 5298.1800648902. The cubic root of 28070712 is about 303.9143052548.

Adding to 28070712 its reverse (21707082), we get a palindrome (49777794).

It can be divided in two parts, 28070 and 712, that added together give a palindrome (28782).

The spelling of 28070712 in words is "twenty-eight million, seventy thousand, seven hundred twelve".