75870030 has 32 divisors (see below), whose sum is σ = 185527584. Its totient is φ = 19849856.

The previous prime is 75870029. The next prime is 75870071. The reversal of 75870030 is 3007857.

It is a super-2 number, since 2×75870030² = 11512522904401800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 75870030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22269 + ... + 25448.

It is an arithmetic number, because the mean of its divisors is an integer number (5797737).

Almost surely, 2^75870030 is an apocalyptic number.

75870030 is an abundant number, since it is smaller than the sum of its proper divisors (109657554).

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

75870030 is a wasteful number, since it uses less digits than its factorization.

75870030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47780.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 75870030 is about 8710.3404066661. The cubic root of 75870030 is about 423.3407601290.

Adding to 75870030 its reverse (3007857), we get a palindrome (78877887).

The spelling of 75870030 in words is "seventy-five million, eight hundred seventy thousand, thirty".