30923730 has 48 divisors (see below), whose sum is σ = 83903040. Its totient is φ = 7887264.

The previous prime is 30923723. The next prime is 30923741. The reversal of 30923730 is 3732903.

It is a super-2 number, since 2×30923730² = 1912554154225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30923694 and 30923703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5400 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (1747980).

Almost surely, 2^30923730 is an apocalyptic number.

30923730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30923730 is an abundant number, since it is smaller than the sum of its proper divisors (52979310).

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

30923730 is a wasteful number, since it uses less digits than its factorization.

30923730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14975 (or 14972 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 27.

The square root of 30923730 is about 5560.9108966068. The cubic root of 30923730 is about 313.8802266763.

The spelling of 30923730 in words is "thirty million, nine hundred twenty-three thousand, seven hundred thirty".