102320190 has 48 divisors (see below), whose sum is σ = 304039008. Its totient is φ = 23387328.

The previous prime is 102320143. The next prime is 102320191. The reversal of 102320190 is 91023201.

It is a happy number.

It is a super-2 number, since 2×102320190² = 20938842563272200, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102320191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80577 + ... + 81836.

It is an arithmetic number, because the mean of its divisors is an integer number (6334146).

Almost surely, 2^102320190 is an apocalyptic number.

102320190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102320190 is an abundant number, since it is smaller than the sum of its proper divisors (201718818).

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

102320190 is a wasteful number, since it uses less digits than its factorization.

102320190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162433 (or 162430 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 102320190 is about 10115.3442847982. The cubic root of 102320190 is about 467.7212618068.

Adding to 102320190 its reverse (91023201), we get a palindrome (193343391).

The spelling of 102320190 in words is "one hundred two million, three hundred twenty thousand, one hundred ninety".