961421832 has 128 divisors (see below), whose sum is σ = 3073075200. Its totient is φ = 272808000.

The previous prime is 961421809. The next prime is 961421843. The reversal of 961421832 is 238124169.

961421832 is a `hidden beast` number, since 9 + 614 + 2 + 1 + 8 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 226207 + ... + 230417.

It is an arithmetic number, because the mean of its divisors is an integer number (24008400).

Almost surely, 2^961421832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 961421832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1536537600).

961421832 is an abundant number, since it is smaller than the sum of its proper divisors (2111653368).

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

961421832 is a wasteful number, since it uses less digits than its factorization.

961421832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384 (or 4374 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 961421832 is about 31006.8029954718. The cubic root of 961421832 is about 986.9716088322.

The spelling of 961421832 in words is "nine hundred sixty-one million, four hundred twenty-one thousand, eight hundred thirty-two".