30497481 has 24 divisors (see below), whose sum is σ = 51577344. Its totient is φ = 17000640.

The previous prime is 30497447. The next prime is 30497497. The reversal of 30497481 is 18479403.

30497481 = T₃₁₀ + T₃₁₁ + ... + T₅₉₆.

It is a happy number.

It is not a de Polignac number, because 30497481 - 2⁶ = 30497417 is a prime.

It is a super-2 number, since 2×30497481² = 1860192694690722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30497431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3321 + ... + 8486.

It is an arithmetic number, because the mean of its divisors is an integer number (2149056).

Almost surely, 2^30497481 is an apocalyptic number.

It is an amenable number.

30497481 is a deficient number, since it is larger than the sum of its proper divisors (21079863).

30497481 is a wasteful number, since it uses less digits than its factorization.

30497481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11861 (or 11858 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 30497481 is about 5522.4524443403. The cubic root of 30497481 is about 312.4313867495.

The spelling of 30497481 in words is "thirty million, four hundred ninety-seven thousand, four hundred eighty-one".