30529081 has 8 divisors (see below), whose sum is σ = 33414624. Its totient is φ = 27661920.

The previous prime is 30529069. The next prime is 30529087. The reversal of 30529081 is 18092503.

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

It is not a de Polignac number, because 30529081 - 2⁵ = 30529049 is a prime.

It is a super-2 number, since 2×30529081² = 1864049573409122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30529087) 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, 991 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (4176828).

Almost surely, 2^30529081 is an apocalyptic number.

It is an amenable number.

30529081 is a deficient number, since it is larger than the sum of its proper divisors (2885543).

30529081 is a wasteful number, since it uses less digits than its factorization.

30529081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 30529081 is about 5525.3127513291. The cubic root of 30529081 is about 312.5392582146.

It can be divided in two parts, 305290 and 81, that added together give a triangular number (305371 = T₇₈₁).

The spelling of 30529081 in words is "thirty million, five hundred twenty-nine thousand, eighty-one".