140821632 has 128 divisors (see below), whose sum is σ = 475075200. Its totient is φ = 40227840.

The previous prime is 140821609. The next prime is 140821643. The reversal of 140821632 is 236128041.

140821632 is a `hidden beast` number, since 1 + 4 + 0 + 8 + 21 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 140821596 and 140821605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21282 + ... + 27102.

It is an arithmetic number, because the mean of its divisors is an integer number (3711525).

Almost surely, 2^140821632 is an apocalyptic number.

140821632 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 140821632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237537600).

140821632 is an abundant number, since it is smaller than the sum of its proper divisors (334253568).

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

140821632 is an equidigital number, since it uses as much as digits as its factorization.

140821632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851 (or 5833 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 140821632 is about 11866.8290625592. The cubic root of 140821632 is about 520.2632197950.

Adding to 140821632 its reverse (236128041), we get a palindrome (376949673).

The spelling of 140821632 in words is "one hundred forty million, eight hundred twenty-one thousand, six hundred thirty-two".