210030020 has 24 divisors (see below), whose sum is σ = 460240704. Its totient is φ = 80359136.

The previous prime is 210030011. The next prime is 210030031. The reversal of 210030020 is 20030012.

It is a super-2 number, since 2×210030020² = 88225218602400800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227834 + ... + 228753.

It is an arithmetic number, because the mean of its divisors is an integer number (19176696).

Almost surely, 2^210030020 is an apocalyptic number.

210030020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210030020 is an abundant number, since it is smaller than the sum of its proper divisors (250210684).

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

210030020 is a wasteful number, since it uses less digits than its factorization.

210030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456619 (or 456617 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 210030020 is about 14492.4124975796. The cubic root of 210030020 is about 594.4205171866.

Adding to 210030020 its reverse (20030012), we get a palindrome (230060032).

The spelling of 210030020 in words is "two hundred ten million, thirty thousand, twenty".