140452220 has 48 divisors (see below), whose sum is σ = 307964160. Its totient is φ = 53738496.

The previous prime is 140452211. The next prime is 140452223. The reversal of 140452220 is 22254041.

It is a happy number.

140452220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140452220² = 39453652205856800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 140452192 and 140452201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140452223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64469 + ... + 66611.

It is an arithmetic number, because the mean of its divisors is an integer number (6415920).

Almost surely, 2^140452220 is an apocalyptic number.

140452220 is a gapful number since it is divisible by the number (10) 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 140452220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153982080).

140452220 is an abundant number, since it is smaller than the sum of its proper divisors (167511940).

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

140452220 is a wasteful number, since it uses less digits than its factorization.

140452220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 140452220 is about 11851.2539420941. The cubic root of 140452220 is about 519.8078925479.

The spelling of 140452220 in words is "one hundred forty million, four hundred fifty-two thousand, two hundred twenty".