30021145400 has 24 divisors (see below), whose sum is σ = 69799163520. Its totient is φ = 12008458080.

The previous prime is 30021145381. The next prime is 30021145403. The reversal of 30021145400 is 454112003.

It is a super-2 number, since 2×30021145400² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021145403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75052664 + ... + 75053063.

It is an arithmetic number, because the mean of its divisors is an integer number (2908298480).

Almost surely, 2^30021145400 is an apocalyptic number.

It is an amenable number.

30021145400 is an abundant number, since it is smaller than the sum of its proper divisors (39778018120).

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

30021145400 is a wasteful number, since it uses less digits than its factorization.

30021145400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150105743 (or 150105734 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 30021145400 its reverse (454112003), we get a palindrome (30475257403).

The spelling of 30021145400 in words is "thirty billion, twenty-one million, one hundred forty-five thousand, four hundred".