7072381 has 4 divisors (see below), whose sum is σ = 7172064. Its totient is φ = 6972700.

The previous prime is 7072369. The next prime is 7072397. The reversal of 7072381 is 1832707.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7072381 - 2⁵ = 7072349 is a prime.

It is a super-2 number, since 2×7072381² = 100037146018322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7072321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49735 + ... + 49876.

It is an arithmetic number, because the mean of its divisors is an integer number (1793016).

Almost surely, 2^7072381 is an apocalyptic number.

7072381 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7072381 is a deficient number, since it is larger than the sum of its proper divisors (99683).

7072381 is an equidigital number, since it uses as much as digits as its factorization.

7072381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99682.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 7072381 is about 2659.3948559776. The cubic root of 7072381 is about 191.9501914345.

The spelling of 7072381 in words is "seven million, seventy-two thousand, three hundred eighty-one".