7021872 has 180 divisors, whose sum is σ = 24012352. Its totient is φ = 1900800.

The previous prime is 7021853. The next prime is 7021879. The reversal of 7021872 is 2781207.

It is not an unprimeable number, because it can be changed into a prime (7021879) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 226497 + ... + 226527.

Almost surely, 2^7021872 is an apocalyptic number.

7021872 is a gapful number since it is divisible by the number (72) 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 7021872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12006176).

7021872 is an abundant number, since it is smaller than the sum of its proper divisors (16990480).

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

7021872 is a wasteful number, since it uses less digits than its factorization.

7021872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 60 counting only the distinct ones).

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

The square root of 7021872 is about 2649.8815067848. The cubic root of 7021872 is about 191.4921474646.

The spelling of 7021872 in words is "seven million, twenty-one thousand, eight hundred seventy-two".