140001620 has 48 divisors (see below), whose sum is σ = 326809728. Its totient is φ = 49944960.

The previous prime is 140001607. The next prime is 140001643. The reversal of 140001620 is 26100041.

It is a junction number, because it is equal to n+sod(n) for n = 140001595 and 140001604.

It is a congruent number.

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, 5657 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (6808536).

Almost surely, 2^140001620 is an apocalyptic number.

140001620 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 140001620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163404864).

140001620 is an abundant number, since it is smaller than the sum of its proper divisors (186808108).

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

140001620 is a wasteful number, since it uses less digits than its factorization.

140001620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12080 (or 12078 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 140001620 is about 11832.2280234958. The cubic root of 140001620 is about 519.2514129965.

Adding to 140001620 its reverse (26100041), we get a palindrome (166101661).

The spelling of 140001620 in words is "one hundred forty million, one thousand, six hundred twenty".