30121396 has 6 divisors (see below), whose sum is σ = 52712450. Its totient is φ = 15060696.

The previous prime is 30121369. The next prime is 30121411. The reversal of 30121396 is 69312103.

It can be written as a sum of positive squares in only one way, i.e., 29311396 + 810000 = 5414^2 + 900^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30121396.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3765171 + ... + 3765178.

Almost surely, 2^30121396 is an apocalyptic number.

It is an amenable number.

30121396 is a deficient number, since it is larger than the sum of its proper divisors (22591054).

30121396 is a wasteful number, since it uses less digits than its factorization.

30121396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7530353 (or 7530351 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 30121396 is about 5488.2962748015. The cubic root of 30121396 is about 311.1418038691.

Adding to 30121396 its reverse (69312103), we get a palindrome (99433499).

The spelling of 30121396 in words is "thirty million, one hundred twenty-one thousand, three hundred ninety-six".