102943400 has 144 divisors (see below), whose sum is σ = 288002400. Its totient is φ = 33517440.

The previous prime is 102943369. The next prime is 102943403. The reversal of 102943400 is 4349201.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (102943403) 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 35 ways as a sum of consecutive naturals, for example, 740531 + ... + 740669.

Almost surely, 2^102943400 is an apocalyptic number.

102943400 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 102943400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144001200).

102943400 is an abundant number, since it is smaller than the sum of its proper divisors (185059000).

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

102943400 is a wasteful number, since it uses less digits than its factorization.

102943400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 102943400 is about 10146.1027000519. The cubic root of 102943400 is about 468.6689365006.

The spelling of 102943400 in words is "one hundred two million, nine hundred forty-three thousand, four hundred".