30636397 has 16 divisors (see below), whose sum is σ = 35629632. Its totient is φ = 26033920.

The previous prime is 30636343. The next prime is 30636427. The reversal of 30636397 is 79363603.

It is not a de Polignac number, because 30636397 - 2⁷ = 30636269 is a prime.

It is a super-2 number, since 2×30636397² = 1877177642283218, 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 (30636197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31878 + ... + 32824.

It is an arithmetic number, because the mean of its divisors is an integer number (2226852).

Almost surely, 2^30636397 is an apocalyptic number.

It is an amenable number.

30636397 is a deficient number, since it is larger than the sum of its proper divisors (4993235).

30636397 is a wasteful number, since it uses less digits than its factorization.

30636397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148.

The product of its (nonzero) digits is 61236, while the sum is 37.

The square root of 30636397 is about 5535.0155374669. The cubic root of 30636397 is about 312.9050432078.

The spelling of 30636397 in words is "thirty million, six hundred thirty-six thousand, three hundred ninety-seven".