201504402 has 96 divisors (see below), whose sum is σ = 506191680. Its totient is φ = 58924800.

The previous prime is 201504389. The next prime is 201504409. The reversal of 201504402 is 204405102.

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

It is not an unprimeable number, because it can be changed into a prime (201504409) 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 47 ways as a sum of consecutive naturals, for example, 570658 + ... + 571010.

It is an arithmetic number, because the mean of its divisors is an integer number (5272830).

Almost surely, 2^201504402 is an apocalyptic number.

201504402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 201504402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253095840).

201504402 is an abundant number, since it is smaller than the sum of its proper divisors (304687278).

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

201504402 is a wasteful number, since it uses less digits than its factorization.

201504402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 400 counting only the distinct ones).

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

The square root of 201504402 is about 14195.2246195684. The cubic root of 201504402 is about 586.2661858013.

Adding to 201504402 its reverse (204405102), we get a palindrome (405909504).

The spelling of 201504402 in words is "two hundred one million, five hundred four thousand, four hundred two".