102445400 has 96 divisors (see below), whose sum is σ = 261144000. Its totient is φ = 37201920.

The previous prime is 102445391. The next prime is 102445423. The reversal of 102445400 is 4544201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98081 + ... + 99119.

It is an arithmetic number, because the mean of its divisors is an integer number (2720250).

Almost surely, 2^102445400 is an apocalyptic number.

102445400 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 102445400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130572000).

102445400 is an abundant number, since it is smaller than the sum of its proper divisors (158698600).

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

102445400 is a wasteful number, since it uses less digits than its factorization.

102445400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 102445400 is about 10121.5315046686. The cubic root of 102445400 is about 467.9119687346.

Adding to 102445400 its reverse (4544201), we get a palindrome (106989601).

The spelling of 102445400 in words is "one hundred two million, four hundred forty-five thousand, four hundred".