30573940 has 12 divisors (see below), whose sum is σ = 64205316. Its totient is φ = 12229568.

The previous prime is 30573937. The next prime is 30573941. The reversal of 30573940 is 4937503.

It can be written as a sum of positive squares in 2 ways, for example, as 13235044 + 17338896 = 3638^2 + 4164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30573941) 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, 764329 + ... + 764368.

It is an arithmetic number, because the mean of its divisors is an integer number (5350443).

Almost surely, 2^30573940 is an apocalyptic number.

It is an amenable number.

30573940 is an abundant number, since it is smaller than the sum of its proper divisors (33631376).

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

30573940 is a wasteful number, since it uses less digits than its factorization.

30573940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528706 (or 1528704 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 30573940 is about 5529.3706694343. The cubic root of 30573940 is about 312.6922635535.

It can be divided in two parts, 30573 and 940, that added together give a palindrome (31513).

The spelling of 30573940 in words is "thirty million, five hundred seventy-three thousand, nine hundred forty".