102452220 has 72 divisors (see below), whose sum is σ = 334684896. Its totient is φ = 25218432.

The previous prime is 102452213. The next prime is 102452227. The reversal of 102452220 is 22254201.

It is an interprime number because it is at equal distance from previous prime (102452213) and next prime (102452227).

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

It is a junction number, because it is equal to n+sod(n) for n = 102452193 and 102452202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102452227) 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, 19552 + ... + 24231.

Almost surely, 2^102452220 is an apocalyptic number.

102452220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102452220 is an abundant number, since it is smaller than the sum of its proper divisors (232232676).

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

102452220 is a wasteful number, since it uses less digits than its factorization.

102452220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43811 (or 43806 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 102452220 is about 10121.8684045980. The cubic root of 102452220 is about 467.9223517901.

The spelling of 102452220 in words is "one hundred two million, four hundred fifty-two thousand, two hundred twenty".