30922020 has 96 divisors (see below), whose sum is σ = 97050240. Its totient is φ = 8173440.

The previous prime is 30922009. The next prime is 30922039. The reversal of 30922020 is 2022903.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30921984 and 30922002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93255 + ... + 93585.

It is an arithmetic number, because the mean of its divisors is an integer number (1010940).

Almost surely, 2^30922020 is an apocalyptic number.

30922020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30922020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48525120).

30922020 is an abundant number, since it is smaller than the sum of its proper divisors (66128220).

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

30922020 is a wasteful number, since it uses less digits than its factorization.

30922020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30922020 is about 5560.7571426920. The cubic root of 30922020 is about 313.8744409891.

Adding to 30922020 its reverse (2022903), we get a palindrome (32944923).

The spelling of 30922020 in words is "thirty million, nine hundred twenty-two thousand, twenty".