30701940 has 48 divisors (see below), whose sum is σ = 86365440. Its totient is φ = 8149120.

The previous prime is 30701933. The next prime is 30701953. The reversal of 30701940 is 4910703.

It is a self number, because there is not a number n which added to its sum of digits gives 30701940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13270 + ... + 15410.

It is an arithmetic number, because the mean of its divisors is an integer number (1799280).

Almost surely, 2^30701940 is an apocalyptic number.

30701940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30701940 is an abundant number, since it is smaller than the sum of its proper divisors (55663500).

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

30701940 is a wasteful number, since it uses less digits than its factorization.

30701940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 30701940 is about 5540.9331344098. The cubic root of 30701940 is about 313.1280255563.

The spelling of 30701940 in words is "thirty million, seven hundred one thousand, nine hundred forty".