28737066 has 16 divisors (see below), whose sum is σ = 57542688. Its totient is φ = 9567600.

The previous prime is 28737061. The next prime is 28737073. The reversal of 28737066 is 66073782.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28737061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3781 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (3596418).

Almost surely, 2^28737066 is an apocalyptic number.

28737066 is an abundant number, since it is smaller than the sum of its proper divisors (28805622).

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

28737066 is a wasteful number, since it uses less digits than its factorization.

28737066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 28737066 is about 5360.6964099826. The cubic root of 28737066 is about 306.3003373595.

The spelling of 28737066 in words is "twenty-eight million, seven hundred thirty-seven thousand, sixty-six".