28148061 has 8 divisors (see below), whose sum is σ = 37779904. Its totient is φ = 18640800.

The previous prime is 28148053. The next prime is 28148069. The reversal of 28148061 is 16084182.

It is an interprime number because it is at equal distance from previous prime (28148053) and next prime (28148069).

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

It is not a de Polignac number, because 28148061 - 2³ = 28148053 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 (28148069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30616 + ... + 31521.

It is an arithmetic number, because the mean of its divisors is an integer number (4722488).

Almost surely, 2^28148061 is an apocalyptic number.

It is an amenable number.

28148061 is a deficient number, since it is larger than the sum of its proper divisors (9631843).

28148061 is a wasteful number, since it uses less digits than its factorization.

28148061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62291.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 28148061 is about 5305.4746253281. The cubic root of 28148061 is about 304.1931950924.

The spelling of 28148061 in words is "twenty-eight million, one hundred forty-eight thousand, sixty-one".