30144819 has 4 divisors (see below), whose sum is σ = 40193096. Its totient is φ = 20096544.

The previous prime is 30144817. The next prime is 30144823. The reversal of 30144819 is 91844103.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30144819 - 2¹ = 30144817 is a prime.

It is a super-2 number, since 2×30144819² = 1817420225085522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30144817) 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, 5024134 + ... + 5024139.

It is an arithmetic number, because the mean of its divisors is an integer number (10048274).

Almost surely, 2^30144819 is an apocalyptic number.

30144819 is a deficient number, since it is larger than the sum of its proper divisors (10048277).

30144819 is a wasteful number, since it uses less digits than its factorization.

30144819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048276.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 30144819 is about 5490.4297645995. The cubic root of 30144819 is about 311.2224330031. Note that the first 3 decimals are identical.

The spelling of 30144819 in words is "thirty million, one hundred forty-four thousand, eight hundred nineteen".