30404253 has 16 divisors (see below), whose sum is σ = 45167616. Its totient is φ = 18033840.

The previous prime is 30404251. The next prime is 30404287. The reversal of 30404253 is 35240403.

It is a happy number.

It is not a de Polignac number, because 30404253 - 2¹ = 30404251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30404251) 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, 8251 + ... + 11352.

It is an arithmetic number, because the mean of its divisors is an integer number (2822976).

Almost surely, 2^30404253 is an apocalyptic number.

30404253 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30404253 is a deficient number, since it is larger than the sum of its proper divisors (14763363).

30404253 is a wasteful number, since it uses less digits than its factorization.

30404253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19664.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 30404253 is about 5514.0051686592. The cubic root of 30404253 is about 312.1127037769.

Adding to 30404253 its reverse (35240403), we get a palindrome (65644656).

The spelling of 30404253 in words is "thirty million, four hundred four thousand, two hundred fifty-three".