18070272 has 216 divisors, whose sum is σ = 61221888. Its totient is φ = 5068800.

The previous prime is 18070259. The next prime is 18070301. The reversal of 18070272 is 27207081.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 582897 + ... + 582927.

Almost surely, 2^18070272 is an apocalyptic number.

18070272 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 18070272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30610944).

18070272 is an abundant number, since it is smaller than the sum of its proper divisors (43151616).

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

18070272 is a wasteful number, since it uses less digits than its factorization.

18070272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 18070272 is about 4250.9142546045. The cubic root of 18070272 is about 262.4147423801.

The spelling of 18070272 in words is "eighteen million, seventy thousand, two hundred seventy-two".