30343720 has 32 divisors (see below), whose sum is σ = 74481120. Its totient is φ = 11033920.

The previous prime is 30343673. The next prime is 30343723. The reversal of 30343720 is 2734303.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 30343691 and 30343700.

It is not an unprimeable number, because it can be changed into a prime (30343723) 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, 34042 + ... + 34921.

It is an arithmetic number, because the mean of its divisors is an integer number (2327535).

Almost surely, 2^30343720 is an apocalyptic number.

It is an amenable number.

30343720 is an abundant number, since it is smaller than the sum of its proper divisors (44137400).

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

30343720 is a wasteful number, since it uses less digits than its factorization.

30343720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68985 (or 68981 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 22.

The square root of 30343720 is about 5508.5134110756. The cubic root of 30343720 is about 311.9054337552.

The spelling of 30343720 in words is "thirty million, three hundred forty-three thousand, seven hundred twenty".