30278401 has 4 divisors (see below), whose sum is σ = 30393792. Its totient is φ = 30163012.

The previous prime is 30278399. The next prime is 30278441. The reversal of 30278401 is 10487203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30278401 - 2¹ = 30278399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30278441) 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, 57301 + ... + 57826.

It is an arithmetic number, because the mean of its divisors is an integer number (7598448).

Almost surely, 2^30278401 is an apocalyptic number.

It is an amenable number.

30278401 is a deficient number, since it is larger than the sum of its proper divisors (115391).

30278401 is a wasteful number, since it uses less digits than its factorization.

30278401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115390.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 30278401 is about 5502.5813033521. The cubic root of 30278401 is about 311.6814666286.

The spelling of 30278401 in words is "thirty million, two hundred seventy-eight thousand, four hundred one".