102153220 has 48 divisors (see below), whose sum is σ = 231916608. Its totient is φ = 37572480.

The previous prime is 102153217. The next prime is 102153257. The reversal of 102153220 is 22351201.

It is a junction number, because it is equal to n+sod(n) for n = 102153194 and 102153203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85467 + ... + 86653.

It is an arithmetic number, because the mean of its divisors is an integer number (4831596).

Almost surely, 2^102153220 is an apocalyptic number.

102153220 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 102153220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115958304).

102153220 is an abundant number, since it is smaller than the sum of its proper divisors (129763388).

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

102153220 is a wasteful number, since it uses less digits than its factorization.

102153220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 102153220 is about 10107.0876121660. The cubic root of 102153220 is about 467.4667081443.

The spelling of 102153220 in words is "one hundred two million, one hundred fifty-three thousand, two hundred twenty".