30640365 has 48 divisors (see below), whose sum is σ = 61117056. Its totient is φ = 13910400.

The previous prime is 30640349. The next prime is 30640367. The reversal of 30640365 is 56304603.

It is not a de Polignac number, because 30640365 - 2⁴ = 30640349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30640367) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66235 + ... + 66695.

It is an arithmetic number, because the mean of its divisors is an integer number (1273272).

Almost surely, 2^30640365 is an apocalyptic number.

30640365 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30640365 is a deficient number, since it is larger than the sum of its proper divisors (30476691).

30640365 is a wasteful number, since it uses less digits than its factorization.

30640365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 30640365 is about 5535.3739711062. The cubic root of 30640365 is about 312.9185516894.

Adding to 30640365 its reverse (56304603), we get a palindrome (86944968).

The spelling of 30640365 in words is "thirty million, six hundred forty thousand, three hundred sixty-five".