102020736 has 64 divisors (see below), whose sum is σ = 272095200. Its totient is φ = 33868800.

The previous prime is 102020719. The next prime is 102020767. The reversal of 102020736 is 637020201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145186 + ... + 145886.

Almost surely, 2^102020736 is an apocalyptic number.

102020736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102020736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136047600).

102020736 is an abundant number, since it is smaller than the sum of its proper divisors (170074464).

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

102020736 is an equidigital number, since it uses as much as digits as its factorization.

102020736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 102020736 is about 10100.5314711653. The cubic root of 102020736 is about 467.2645325884.

Adding to 102020736 its reverse (637020201), we get a palindrome (739040937).

The spelling of 102020736 in words is "one hundred two million, twenty thousand, seven hundred thirty-six".