28096420 has 24 divisors (see below), whose sum is σ = 64366848. Its totient is φ = 10216800.

The previous prime is 28096403. The next prime is 28096423. The reversal of 28096420 is 2469082.

It is not an unprimeable number, because it can be changed into a prime (28096423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63636 + ... + 64075.

It is an arithmetic number, because the mean of its divisors is an integer number (2681952).

Almost surely, 2^28096420 is an apocalyptic number.

28096420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28096420 is an abundant number, since it is smaller than the sum of its proper divisors (36270428).

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

28096420 is a wasteful number, since it uses less digits than its factorization.

28096420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127731 (or 127729 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28096420 is about 5300.6056257752. The cubic root of 28096420 is about 304.0070548917.

It can be divided in two parts, 2809 and 6420, that added together give a palindrome (9229).

The spelling of 28096420 in words is "twenty-eight million, ninety-six thousand, four hundred twenty".