28797038 has 4 divisors (see below), whose sum is σ = 43195560. Its totient is φ = 14398518.

The previous prime is 28797023. The next prime is 28797053. The reversal of 28797038 is 83079782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28797023) and next prime (28797053).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28797038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7199258 + ... + 7199261.

It is an arithmetic number, because the mean of its divisors is an integer number (10798890).

Almost surely, 2^28797038 is an apocalyptic number.

28797038 is a deficient number, since it is larger than the sum of its proper divisors (14398522).

28797038 is a wasteful number, since it uses less digits than its factorization.

28797038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14398521.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 28797038 is about 5366.2871708473. The cubic root of 28797038 is about 306.5132642243.

The spelling of 28797038 in words is "twenty-eight million, seven hundred ninety-seven thousand, thirty-eight".