30574981 has 8 divisors (see below), whose sum is σ = 32382144. Its totient is φ = 28807680.

The previous prime is 30574979. The next prime is 30574997. The reversal of 30574981 is 18947503.

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 30574981 - 2¹ = 30574979 is a prime.

It is a super-2 number, since 2×30574981² = 1869658926300722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30574981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30574681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8380 + ... + 11461.

It is an arithmetic number, because the mean of its divisors is an integer number (4047768).

Almost surely, 2^30574981 is an apocalyptic number.

It is an amenable number.

30574981 is a deficient number, since it is larger than the sum of its proper divisors (1807163).

30574981 is a wasteful number, since it uses less digits than its factorization.

30574981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19931.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 30574981 is about 5529.4648023113. The cubic root of 30574981 is about 312.6958124250.

The spelling of 30574981 in words is "thirty million, five hundred seventy-four thousand, nine hundred eighty-one".