961619272 has 32 divisors (see below), whose sum is σ = 1825441920. Its totient is φ = 474863040.

The previous prime is 961619257. The next prime is 961619327. The reversal of 961619272 is 272916169.

It is a happy 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, 312622 + ... + 315682.

It is an arithmetic number, because the mean of its divisors is an integer number (57045060).

Almost surely, 2^961619272 is an apocalyptic number.

It is an amenable number.

961619272 is a deficient number, since it is larger than the sum of its proper divisors (863822648).

961619272 is a wasteful number, since it uses less digits than its factorization.

961619272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541 (or 3537 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 961619272 is about 31009.9866494650. The cubic root of 961619272 is about 987.0391665299.

The spelling of 961619272 in words is "nine hundred sixty-one million, six hundred nineteen thousand, two hundred seventy-two".