30540740 has 24 divisors (see below), whose sum is σ = 64259160. Its totient is φ = 12192768.

The previous prime is 30540737. The next prime is 30540743. The reversal of 30540740 is 4704503.

It is an interprime number because it is at equal distance from previous prime (30540737) and next prime (30540743).

It can be written as a sum of positive squares in 4 ways, for example, as 92416 + 30448324 = 304^2 + 5518^2 .

It is not an unprimeable number, because it can be changed into a prime (30540743) 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, 12326 + ... + 14594.

It is an arithmetic number, because the mean of its divisors is an integer number (2677465).

Almost surely, 2^30540740 is an apocalyptic number.

It is an amenable number.

30540740 is an abundant number, since it is smaller than the sum of its proper divisors (33718420).

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

30540740 is a wasteful number, since it uses less digits than its factorization.

30540740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951 (or 2949 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 30540740 is about 5526.3677040168. The cubic root of 30540740 is about 312.5790392073.

The spelling of 30540740 in words is "thirty million, five hundred forty thousand, seven hundred forty".