253020030 has 32 divisors (see below), whose sum is σ = 610896384. Its totient is φ = 67066656.

The previous prime is 253020013. The next prime is 253020043. The reversal of 253020030 is 30020352.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253019991 and 253020009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20242 + ... + 30261.

It is an arithmetic number, because the mean of its divisors is an integer number (19090512).

Almost surely, 2^253020030 is an apocalyptic number.

253020030 is an abundant number, since it is smaller than the sum of its proper divisors (357876354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253020030 is a wasteful number, since it uses less digits than its factorization.

253020030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50680.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 253020030 is about 15906.6033457806. The cubic root of 253020030 is about 632.4870447856.

Adding to 253020030 its reverse (30020352), we get a palindrome (283040382).

The spelling of 253020030 in words is "two hundred fifty-three million, twenty thousand, thirty".