30722430 has 32 divisors (see below), whose sum is σ = 77616000. Its totient is φ = 7761312.

The previous prime is 30722429. The next prime is 30722431. The reversal of 30722430 is 3422703.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30722429) and next prime (30722431).

It is a junction number, because it is equal to n+sod(n) for n = 30722397 and 30722406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30722431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26380 + ... + 27519.

It is an arithmetic number, because the mean of its divisors is an integer number (2425500).

Almost surely, 2^30722430 is an apocalyptic number.

30722430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30722430 is an abundant number, since it is smaller than the sum of its proper divisors (46893570).

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

30722430 is a wasteful number, since it uses less digits than its factorization.

30722430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53928.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 30722430 is about 5542.7817925659. The cubic root of 30722430 is about 313.1976689997.

The spelling of 30722430 in words is "thirty million, seven hundred twenty-two thousand, four hundred thirty".