1634240272 has 40 divisors (see below), whose sum is σ = 3716486336. Its totient is φ = 681457536.

The previous prime is 1634240249. The next prime is 1634240273. The reversal of 1634240272 is 2720424361.

It is a happy number.

It is a super-3 number, since 3×1634240272³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1634240273) 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 7 ways as a sum of consecutive naturals, for example, 193038 + ... + 201325.

Almost surely, 2^1634240272 is an apocalyptic number.

It is an amenable number.

1634240272 is an abundant number, since it is smaller than the sum of its proper divisors (2082246064).

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

1634240272 is a wasteful number, since it uses less digits than its factorization.

1634240272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394415 (or 394409 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 1634240272 is about 40425.7377421860. The cubic root of 1634240272 is about 1177.8915407325.

The spelling of 1634240272 in words is "one billion, six hundred thirty-four million, two hundred forty thousand, two hundred seventy-two".