147921732 has 72 divisors (see below), whose sum is σ = 434616000. Its totient is φ = 41542848.

The previous prime is 147921731. The next prime is 147921749. The reversal of 147921732 is 237129741.

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 not an unprimeable number, because it can be changed into a prime (147921731) 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 23 ways as a sum of consecutive naturals, for example, 9894 + ... + 19842.

Almost surely, 2^147921732 is an apocalyptic number.

147921732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 147921732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217308000).

147921732 is an abundant number, since it is smaller than the sum of its proper divisors (286694268).

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

147921732 is a wasteful number, since it uses less digits than its factorization.

147921732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10025 (or 10020 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 147921732 is about 12162.3078402086. The cubic root of 147921732 is about 528.8639866253.

The spelling of 147921732 in words is "one hundred forty-seven million, nine hundred twenty-one thousand, seven hundred thirty-two".