102644514 has 72 divisors (see below), whose sum is σ = 267693660. Its totient is φ = 28308672.

The previous prime is 102644491. The next prime is 102644519. The reversal of 102644514 is 415446201.

102644514 is a `hidden beast` number, since 1 + 0 + 2 + 644 + 5 + 14 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 98664489 + 3980025 = 9933^2 + 1995^2 .

It is not an unprimeable number, because it can be changed into a prime (102644519) 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 35 ways as a sum of consecutive naturals, for example, 23572 + ... + 27584.

Almost surely, 2^102644514 is an apocalyptic number.

102644514 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102644514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133846830).

102644514 is an abundant number, since it is smaller than the sum of its proper divisors (165049146).

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

102644514 is a wasteful number, since it uses less digits than its factorization.

102644514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064 (or 4054 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 102644514 is about 10131.3628895623. The cubic root of 102644514 is about 468.2149188204.

The spelling of 102644514 in words is "one hundred two million, six hundred forty-four thousand, five hundred fourteen".