28013061 has 8 divisors (see below), whose sum is σ = 37404640. Its totient is φ = 18648432.

The previous prime is 28013053. The next prime is 28013071. The reversal of 28013061 is 16031082.

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

It is not a de Polignac number, because 28013061 - 2³ = 28013053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28013071) 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, 4171 + ... + 8568.

It is an arithmetic number, because the mean of its divisors is an integer number (4675580).

Almost surely, 2^28013061 is an apocalyptic number.

It is an amenable number.

28013061 is a deficient number, since it is larger than the sum of its proper divisors (9391579).

28013061 is a wasteful number, since it uses less digits than its factorization.

28013061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13475.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 28013061 is about 5292.7366267367. The cubic root of 28013061 is about 303.7061051916.

The spelling of 28013061 in words is "twenty-eight million, thirteen thousand, sixty-one".