30285740 has 24 divisors (see below), whose sum is σ = 64033200. Its totient is φ = 12031808.

The previous prime is 30285727. The next prime is 30285743. The reversal of 30285740 is 4758203.

It is a happy number.

It is a super-3 number, since 3×30285740³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (30285743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2102 + ... + 8061.

It is an arithmetic number, because the mean of its divisors is an integer number (2668050).

Almost surely, 2^30285740 is an apocalyptic number.

It is an amenable number.

30285740 is an abundant number, since it is smaller than the sum of its proper divisors (33747460).

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

30285740 is a wasteful number, since it uses less digits than its factorization.

30285740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10321 (or 10319 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 30285740 is about 5503.2481317854. The cubic root of 30285740 is about 311.7066467946.

The spelling of 30285740 in words is "thirty million, two hundred eighty-five thousand, seven hundred forty".