102030220 has 12 divisors (see below), whose sum is σ = 214263504. Its totient is φ = 40812080.

The previous prime is 102030217. The next prime is 102030233. The reversal of 102030220 is 22030201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102030197 and 102030206.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2550736 + ... + 2550775.

It is an arithmetic number, because the mean of its divisors is an integer number (17855292).

Almost surely, 2^102030220 is an apocalyptic number.

102030220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102030220 is an abundant number, since it is smaller than the sum of its proper divisors (112233284).

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

102030220 is a wasteful number, since it uses less digits than its factorization.

102030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101520 (or 5101518 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 102030220 is about 10101.0009405009. Note that the first 3 decimals coincide. The cubic root of 102030220 is about 467.2790113427.

Adding to 102030220 its reverse (22030201), we get a palindrome (124060421).

The spelling of 102030220 in words is "one hundred two million, thirty thousand, two hundred twenty".