272197640 has 128 divisors (see below), whose sum is σ = 751161600. Its totient is φ = 87352320.

The previous prime is 272197631. The next prime is 272197643. The reversal of 272197640 is 46791272.

It is a junction number, because it is equal to n+sod(n) for n = 272197594 and 272197603.

It is not an unprimeable number, because it can be changed into a prime (272197643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130526 + ... + 132594.

It is an arithmetic number, because the mean of its divisors is an integer number (5868450).

Almost surely, 2^272197640 is an apocalyptic number.

272197640 is a gapful number since it is divisible by the number (20) 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 272197640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375580800).

272197640 is an abundant number, since it is smaller than the sum of its proper divisors (478963960).

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

272197640 is a wasteful number, since it uses less digits than its factorization.

272197640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 272197640 is about 16498.4132570378. The cubic root of 272197640 is about 648.0792528683.

The spelling of 272197640 in words is "two hundred seventy-two million, one hundred ninety-seven thousand, six hundred forty".