28350612 has 18 divisors (see below), whose sum is σ = 71664138. Its totient is φ = 9450192.

The previous prime is 28350607. The next prime is 28350617. The reversal of 28350612 is 21605382.

It is an interprime number because it is at equal distance from previous prime (28350607) and next prime (28350617).

It can be written as a sum of positive squares in only one way, i.e., 14243076 + 14107536 = 3774^2 + 3756^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28350617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 393723 + ... + 393794.

It is an arithmetic number, because the mean of its divisors is an integer number (3981341).

Almost surely, 2^28350612 is an apocalyptic number.

It is an amenable number.

28350612 is an abundant number, since it is smaller than the sum of its proper divisors (43313526).

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

28350612 is a wasteful number, since it uses less digits than its factorization.

28350612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787527 (or 787522 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28350612 is about 5324.5292749688. The cubic root of 28350612 is about 304.9211011541.

Adding to 28350612 its reverse (21605382), we get a palindrome (49955994).

The spelling of 28350612 in words is "twenty-eight million, three hundred fifty thousand, six hundred twelve".