102247272 has 80 divisors (see below), whose sum is σ = 296316900. Its totient is φ = 32901120.

The previous prime is 102247267. The next prime is 102247279. The reversal of 102247272 is 272742201.

It can be written as a sum of positive squares in 2 ways, for example, as 100520676 + 1726596 = 10026^2 + 1314^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102247279) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 16072 + ... + 21512.

Almost surely, 2^102247272 is an apocalyptic number.

102247272 is a gapful number since it is divisible by the number (12) 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 102247272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148158450).

102247272 is an abundant number, since it is smaller than the sum of its proper divisors (194069628).

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

102247272 is a wasteful number, since it uses less digits than its factorization.

102247272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488 (or 5475 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 102247272 is about 10111.7393162601. The cubic root of 102247272 is about 467.6101289540.

Adding to 102247272 its reverse (272742201), we get a palindrome (374989473).

The spelling of 102247272 in words is "one hundred two million, two hundred forty-seven thousand, two hundred seventy-two".