30895380 has 36 divisors (see below), whose sum is σ = 93716532. Its totient is φ = 8238720.

The previous prime is 30895369. The next prime is 30895421. The reversal of 30895380 is 8359803.

It can be written as a sum of positive squares in 2 ways, for example, as 10265616 + 20629764 = 3204^2 + 4542^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 85641 + ... + 86000.

It is an arithmetic number, because the mean of its divisors is an integer number (2603237).

Almost surely, 2^30895380 is an apocalyptic number.

30895380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30895380 is an abundant number, since it is smaller than the sum of its proper divisors (62821152).

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

30895380 is a wasteful number, since it uses less digits than its factorization.

30895380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171656 (or 171651 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 30895380 is about 5558.3612692951. The cubic root of 30895380 is about 313.7842785149.

The spelling of 30895380 in words is "thirty million, eight hundred ninety-five thousand, three hundred eighty".