28462987 has 4 divisors (see below), whose sum is σ = 32529136. Its totient is φ = 24396840.

The previous prime is 28462939. The next prime is 28462999. The reversal of 28462987 is 78926482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78926482 = 2 ⋅39463241.

It is a cyclic number.

It is not a de Polignac number, because 28462987 - 2¹⁵ = 28430219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28462927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033064 + ... + 2033077.

It is an arithmetic number, because the mean of its divisors is an integer number (8132284).

Almost surely, 2^28462987 is an apocalyptic number.

28462987 is a deficient number, since it is larger than the sum of its proper divisors (4066149).

28462987 is an equidigital number, since it uses as much as digits as its factorization.

28462987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066148.

The product of its digits is 387072, while the sum is 46.

The square root of 28462987 is about 5335.0714147048. The cubic root of 28462987 is about 305.3234479626.

The spelling of 28462987 in words is "twenty-eight million, four hundred sixty-two thousand, nine hundred eighty-seven".