28020652 has 24 divisors (see below), whose sum is σ = 55222272. Its totient is φ = 12325200.

The previous prime is 28020631. The next prime is 28020659. The reversal of 28020652 is 25602082.

It is not an unprimeable number, because it can be changed into a prime (28020659) 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, 8908 + ... + 11635.

It is an arithmetic number, because the mean of its divisors is an integer number (2300928).

Almost surely, 2^28020652 is an apocalyptic number.

28020652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28020652 is a deficient number, since it is larger than the sum of its proper divisors (27201620).

28020652 is a wasteful number, since it uses less digits than its factorization.

28020652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20589 (or 20587 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28020652 is about 5293.4536930061. The cubic root of 28020652 is about 303.7335355491.

The spelling of 28020652 in words is "twenty-eight million, twenty thousand, six hundred fifty-two".