28415751 has 16 divisors (see below), whose sum is σ = 46631424. Its totient is φ = 14988384.

The previous prime is 28415749. The next prime is 28415753. The reversal of 28415751 is 15751482.

It is an interprime number because it is at equal distance from previous prime (28415749) and next prime (28415753).

It is not a de Polignac number, because 28415751 - 2¹ = 28415749 is a prime.

It is a super-3 number, since 3×28415751³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28415753) 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 15 ways as a sum of consecutive naturals, for example, 51771 + ... + 52316.

It is an arithmetic number, because the mean of its divisors is an integer number (2914464).

Almost surely, 2^28415751 is an apocalyptic number.

28415751 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28415751 is a deficient number, since it is larger than the sum of its proper divisors (18215673).

28415751 is a wasteful number, since it uses less digits than its factorization.

28415751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104110.

The product of its digits is 11200, while the sum is 33.

The square root of 28415751 is about 5330.6426441847. The cubic root of 28415751 is about 305.1544537064.

The spelling of 28415751 in words is "twenty-eight million, four hundred fifteen thousand, seven hundred fifty-one".