28699274 has 4 divisors (see below), whose sum is σ = 43048914. Its totient is φ = 14349636.

The previous prime is 28699271. The next prime is 28699277. The reversal of 28699274 is 47299682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47299682 = 2 ⋅23649841.

It is an interprime number because it is at equal distance from previous prime (28699271) and next prime (28699277).

It can be written as a sum of positive squares in only one way, i.e., 23668225 + 5031049 = 4865^2 + 2243^2 .

It is not an unprimeable number, because it can be changed into a prime (28699271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7174817 + ... + 7174820.

Almost surely, 2^28699274 is an apocalyptic number.

28699274 is a deficient number, since it is larger than the sum of its proper divisors (14349640).

28699274 is a wasteful number, since it uses less digits than its factorization.

28699274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14349639.

The product of its digits is 435456, while the sum is 47.

The square root of 28699274 is about 5357.1703351676. The cubic root of 28699274 is about 306.1660070090.

The spelling of 28699274 in words is "twenty-eight million, six hundred ninety-nine thousand, two hundred seventy-four".