28617616 has 10 divisors (see below), whose sum is σ = 55446662. Its totient is φ = 14308800.

The previous prime is 28617583. The next prime is 28617649. The reversal of 28617616 is 61671682.

It is an interprime number because it is at equal distance from previous prime (28617583) and next prime (28617649).

It can be written as a sum of positive squares in only one way, i.e., 24601600 + 4016016 = 4960^2 + 2004^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 894285 + ... + 894316.

Almost surely, 2^28617616 is an apocalyptic number.

It is an amenable number.

28617616 is a deficient number, since it is larger than the sum of its proper divisors (26829046).

28617616 is a wasteful number, since it uses less digits than its factorization.

28617616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788609 (or 1788603 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 28617616 is about 5349.5435319287. The cubic root of 28617616 is about 305.8753532799.

The spelling of 28617616 in words is "twenty-eight million, six hundred seventeen thousand, six hundred sixteen".