28297634 has 8 divisors (see below), whose sum is σ = 42539520. Its totient is φ = 14117796.

The previous prime is 28297603. The next prime is 28297657. The reversal of 28297634 is 43679282.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 28297591 and 28297600.

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, 14354 + ... + 16205.

It is an arithmetic number, because the mean of its divisors is an integer number (5317440).

Almost surely, 2^28297634 is an apocalyptic number.

28297634 is a deficient number, since it is larger than the sum of its proper divisors (14241886).

28297634 is a wasteful number, since it uses less digits than its factorization.

28297634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31024.

The product of its digits is 145152, while the sum is 41.

The square root of 28297634 is about 5319.5520488101. The cubic root of 28297634 is about 304.7310501974.

The spelling of 28297634 in words is "twenty-eight million, two hundred ninety-seven thousand, six hundred thirty-four".