28487438 has 8 divisors (see below), whose sum is σ = 48835632. Its totient is φ = 12208896.

The previous prime is 28487429. The next prime is 28487443. The reversal of 28487438 is 83478482.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017395 + ... + 1017422.

It is an arithmetic number, because the mean of its divisors is an integer number (6104454).

Almost surely, 2^28487438 is an apocalyptic number.

28487438 is a deficient number, since it is larger than the sum of its proper divisors (20348194).

28487438 is a wasteful number, since it uses less digits than its factorization.

28487438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034826.

The product of its digits is 344064, while the sum is 44.

The square root of 28487438 is about 5337.3624572442. The cubic root of 28487438 is about 305.4108518475.

The spelling of 28487438 in words is "twenty-eight million, four hundred eighty-seven thousand, four hundred thirty-eight".