102444520 has 32 divisors (see below), whose sum is σ = 231313320. Its totient is φ = 40833280.

The previous prime is 102444469. The next prime is 102444547. The reversal of 102444520 is 25444201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 89756676 + 12687844 = 9474^2 + 3562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102444491 and 102444500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7350 + ... + 16090.

Almost surely, 2^102444520 is an apocalyptic number.

102444520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102444520 is an abundant number, since it is smaller than the sum of its proper divisors (128868800).

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

102444520 is a wasteful number, since it uses less digits than its factorization.

102444520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045 (or 9041 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 102444520 is about 10121.4880328932. The cubic root of 102444520 is about 467.9106289519.

Adding to 102444520 its reverse (25444201), we get a palindrome (127888721).

The spelling of 102444520 in words is "one hundred two million, four hundred forty-four thousand, five hundred twenty".