101428515 has 24 divisors (see below), whose sum is σ = 181874160. Its totient is φ = 52229184.

The previous prime is 101428513. The next prime is 101428577. The reversal of 101428515 is 515824101.

101428515 is a `hidden beast` number, since 1 + 0 + 142 + 8 + 515 = 666.

It is not a de Polignac number, because 101428515 - 2¹ = 101428513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101428513) 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 23 ways as a sum of consecutive naturals, for example, 37557 + ... + 40166.

It is an arithmetic number, because the mean of its divisors is an integer number (7578090).

Almost surely, 2^101428515 is an apocalyptic number.

101428515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101428515 is a deficient number, since it is larger than the sum of its proper divisors (80445645).

101428515 is a wasteful number, since it uses less digits than its factorization.

101428515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77763 (or 77760 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 101428515 is about 10071.1724739476. The cubic root of 101428515 is about 466.3586348747.

It can be divided in two parts, 1014 and 28515, that multiplied together give a triangular number (28914210 = T₇₆₀₄).

The spelling of 101428515 in words is "one hundred one million, four hundred twenty-eight thousand, five hundred fifteen".