30720701 has 8 divisors (see below), whose sum is σ = 35277600. Its totient is φ = 26457840.

The previous prime is 30720691. The next prime is 30720719. The reversal of 30720701 is 10702703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30720701 - 2¹⁸ = 30458557 is a prime.

It is a super-2 number, since 2×30720701² = 1887522939862802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30720401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73286 + ... + 73703.

It is an arithmetic number, because the mean of its divisors is an integer number (4409700).

Almost surely, 2^30720701 is an apocalyptic number.

It is an amenable number.

30720701 is a deficient number, since it is larger than the sum of its proper divisors (4556899).

30720701 is a wasteful number, since it uses less digits than its factorization.

30720701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147019.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 30720701 is about 5542.6258217563. The cubic root of 30720701 is about 313.1917934995.

The spelling of 30720701 in words is "thirty million, seven hundred twenty thousand, seven hundred one".