28214536 has 32 divisors (see below), whose sum is σ = 61871040. Its totient is φ = 11809728.

The previous prime is 28214533. The next prime is 28214539. The reversal of 28214536 is 63541282.

It is an interprime number because it is at equal distance from previous prime (28214533) and next prime (28214539).

It is a junction number, because it is equal to n+sod(n) for n = 28214498 and 28214507.

It is not an unprimeable number, because it can be changed into a prime (28214533) 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, 3451 + ... + 8266.

It is an arithmetic number, because the mean of its divisors is an integer number (1933470).

Almost surely, 2^28214536 is an apocalyptic number.

It is an amenable number.

28214536 is an abundant number, since it is smaller than the sum of its proper divisors (33656504).

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

28214536 is a wasteful number, since it uses less digits than its factorization.

28214536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11773 (or 11769 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 28214536 is about 5311.7356861952. The cubic root of 28214536 is about 304.4324696580.

The spelling of 28214536 in words is "twenty-eight million, two hundred fourteen thousand, five hundred thirty-six".