102020616 has 24 divisors (see below), whose sum is σ = 276306030. Its totient is φ = 34006848.

The previous prime is 102020561. The next prime is 102020629. The reversal of 102020616 is 616020201.

It is a happy number.

102020616 is a `hidden beast` number, since 10 + 20 + 20 + 616 = 666.

It can be written as a sum of positive squares in only one way, i.e., 93199716 + 8820900 = 9654^2 + 2970^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708405 + ... + 708548.

Almost surely, 2^102020616 is an apocalyptic number.

It is an amenable number.

102020616 is an abundant number, since it is smaller than the sum of its proper divisors (174285414).

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

102020616 is a wasteful number, since it uses less digits than its factorization.

102020616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416965 (or 1416958 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 102020616 is about 10100.5255308820. The cubic root of 102020616 is about 467.2643493846.

Adding to 102020616 its reverse (616020201), we get a palindrome (718040817).

The spelling of 102020616 in words is "one hundred two million, twenty thousand, six hundred sixteen".