30155100 has 36 divisors (see below), whose sum is σ = 87249624. Its totient is φ = 8041280.

The previous prime is 30155089. The next prime is 30155101. The reversal of 30155100 is 155103.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30155100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30155101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49959 + ... + 50558.

Almost surely, 2^30155100 is an apocalyptic number.

30155100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30155100 is an abundant number, since it is smaller than the sum of its proper divisors (57094524).

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

30155100 is a wasteful number, since it uses less digits than its factorization.

30155100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100534 (or 100527 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 30155100 is about 5491.3659502896. The cubic root of 30155100 is about 311.2578101619.

The spelling of 30155100 in words is "thirty million, one hundred fifty-five thousand, one hundred".