102023220 has 96 divisors (see below), whose sum is σ = 310181760. Its totient is φ = 24906240.

The previous prime is 102023209. The next prime is 102023221. The reversal of 102023220 is 22320201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102023196 and 102023205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102023221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107950 + ... + 108890.

It is an arithmetic number, because the mean of its divisors is an integer number (3231060).

Almost surely, 2^102023220 is an apocalyptic number.

102023220 is a gapful number since it is divisible by the number (10) 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 102023220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155090880).

102023220 is an abundant number, since it is smaller than the sum of its proper divisors (208158540).

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

102023220 is a wasteful number, since it uses less digits than its factorization.

102023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 102023220 is about 10100.6544342434. The cubic root of 102023220 is about 467.2683248752.

Adding to 102023220 its reverse (22320201), we get a palindrome (124343421).

The spelling of 102023220 in words is "one hundred two million, twenty-three thousand, two hundred twenty".