28649016 has 96 divisors (see below), whose sum is σ = 86177520. Its totient is φ = 8524800.

The previous prime is 28648969. The next prime is 28649021. The reversal of 28649016 is 61094682.

28649016 is a `hidden beast` number, since 2 + 8 + 649 + 0 + 1 + 6 = 666.

It is a super-2 number, since 2×28649016² = 1641532235536512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48016 + ... + 48608.

Almost surely, 2^28649016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28649016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43088760).

28649016 is an abundant number, since it is smaller than the sum of its proper divisors (57528504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28649016 is a wasteful number, since it uses less digits than its factorization.

28649016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28649016 is about 5352.4775571692. The cubic root of 28649016 is about 305.9871838795.

The spelling of 28649016 in words is "twenty-eight million, six hundred forty-nine thousand, sixteen".