30153940 has 12 divisors (see below), whose sum is σ = 63323316. Its totient is φ = 12061568.

The previous prime is 30153923. The next prime is 30153941. The reversal of 30153940 is 4935103.

It can be written as a sum of positive squares in 2 ways, for example, as 18783556 + 11370384 = 4334^2 + 3372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30153941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753829 + ... + 753868.

It is an arithmetic number, because the mean of its divisors is an integer number (5276943).

Almost surely, 2^30153940 is an apocalyptic number.

It is an amenable number.

30153940 is an abundant number, since it is smaller than the sum of its proper divisors (33169376).

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

30153940 is a wasteful number, since it uses less digits than its factorization.

30153940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507706 (or 1507704 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 30153940 is about 5491.2603289227. The cubic root of 30153940 is about 311.2538189776.

The spelling of 30153940 in words is "thirty million, one hundred fifty-three thousand, nine hundred forty".