202145400 has 72 divisors (see below), whose sum is σ = 678877680. Its totient is φ = 53904960.

The previous prime is 202145371. The next prime is 202145407. The reversal of 202145400 is 4541202.

202145400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202145407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 54352 + ... + 57951.

Almost surely, 2^202145400 is an apocalyptic number.

202145400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202145400 is an abundant number, since it is smaller than the sum of its proper divisors (476732280).

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

202145400 is a wasteful number, since it uses less digits than its factorization.

202145400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112325 (or 112313 counting only the distinct ones).

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

The square root of 202145400 is about 14217.7846375587. The cubic root of 202145400 is about 586.8871774940.

Adding to 202145400 its reverse (4541202), we get a palindrome (206686602).

The spelling of 202145400 in words is "two hundred two million, one hundred forty-five thousand, four hundred".