28361397 has 8 divisors (see below), whose sum is σ = 37862944. Its totient is φ = 18883728.

The previous prime is 28361387. The next prime is 28361453. The reversal of 28361397 is 79316382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28361397 - 2⁷ = 28361269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28361327) 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, 2983 + ... + 8100.

It is an arithmetic number, because the mean of its divisors is an integer number (4732868).

Almost surely, 2^28361397 is an apocalyptic number.

It is an amenable number.

28361397 is a deficient number, since it is larger than the sum of its proper divisors (9501547).

28361397 is a wasteful number, since it uses less digits than its factorization.

28361397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11939.

The product of its digits is 54432, while the sum is 39.

The square root of 28361397 is about 5325.5419442532. The cubic root of 28361397 is about 304.9597617794.

The spelling of 28361397 in words is "twenty-eight million, three hundred sixty-one thousand, three hundred ninety-seven".