30497773 has 4 divisors (see below), whose sum is σ = 30606588. Its totient is φ = 30388960.

The previous prime is 30497759. The next prime is 30497801. The reversal of 30497773 is 37779403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37779403 = 113 ⋅334331.

It can be written as a sum of positive squares in 2 ways, for example, as 8191044 + 22306729 = 2862^2 + 4723^2 .

It is a cyclic number.

It is not a de Polignac number, because 30497773 - 2⁵ = 30497741 is a prime.

It is a super-2 number, since 2×30497773² = 1860228315919058, 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 (30497723) 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, 53986 + ... + 54547.

It is an arithmetic number, because the mean of its divisors is an integer number (7651647).

Almost surely, 2^30497773 is an apocalyptic number.

It is an amenable number.

30497773 is a deficient number, since it is larger than the sum of its proper divisors (108815).

30497773 is a wasteful number, since it uses less digits than its factorization.

30497773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108814.

The product of its (nonzero) digits is 111132, while the sum is 40.

The square root of 30497773 is about 5522.4788818066. The cubic root of 30497773 is about 312.4323838775.

The spelling of 30497773 in words is "thirty million, four hundred ninety-seven thousand, seven hundred seventy-three".