30102100 has 36 divisors (see below), whose sum is σ = 74654944. Its totient is φ = 10320480.

The previous prime is 30102091. The next prime is 30102131. The reversal of 30102100 is 120103.

It is a super-2 number, since 2×30102100² = 1812272848820000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20802 + ... + 22201.

Almost surely, 2^30102100 is an apocalyptic number.

It is an amenable number.

30102100 is an abundant number, since it is smaller than the sum of its proper divisors (44552844).

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

30102100 is a wasteful number, since it uses less digits than its factorization.

30102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43024 (or 43017 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 30102100 is about 5486.5380705870. The cubic root of 30102100 is about 311.0753497255.

Adding to 30102100 its reverse (120103), we get a palindrome (30222203).

The spelling of 30102100 in words is "thirty million, one hundred two thousand, one hundred".