201534424 has 32 divisors (see below), whose sum is σ = 465081120. Its totient is φ = 79727616.

The previous prime is 201534419. The next prime is 201534457. The reversal of 201534424 is 424435102.

It is a happy number.

It is a super-2 number, since 2×201534424² = 81232248114023552, which contains 22 as substring.

It is a congruent number.

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, 137689 + ... + 139144.

It is an arithmetic number, because the mean of its divisors is an integer number (14533785).

Almost surely, 2^201534424 is an apocalyptic number.

It is an amenable number.

201534424 is an abundant number, since it is smaller than the sum of its proper divisors (263546696).

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

201534424 is a wasteful number, since it uses less digits than its factorization.

201534424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276859 (or 276855 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 201534424 is about 14196.2820484802. The cubic root of 201534424 is about 586.2953001518.

Adding to 201534424 its reverse (424435102), we get a palindrome (625969526).

The spelling of 201534424 in words is "two hundred one million, five hundred thirty-four thousand, four hundred twenty-four".