28761201 has 36 divisors (see below), whose sum is σ = 49690368. Its totient is φ = 15702192.

The previous prime is 28761191. The next prime is 28761209. The reversal of 28761201 is 10216782.

It is not a de Polignac number, because 28761201 - 2⁶ = 28761137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28761209) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32896 + ... + 33758.

It is an arithmetic number, because the mean of its divisors is an integer number (1380288).

Almost surely, 2^28761201 is an apocalyptic number.

28761201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28761201 is a deficient number, since it is larger than the sum of its proper divisors (20929167).

28761201 is a wasteful number, since it uses less digits than its factorization.

28761201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 28761201 is about 5362.9470443032. The cubic root of 28761201 is about 306.3860627666.

Adding to 28761201 its reverse (10216782), we get a palindrome (38977983).

The spelling of 28761201 in words is "twenty-eight million, seven hundred sixty-one thousand, two hundred one".