30722190 has 16 divisors (see below), whose sum is σ = 73733328. Its totient is φ = 8192576.

The previous prime is 30722171. The next prime is 30722203. The reversal of 30722190 is 9122703.

It is a super-2 number, since 2×30722190² = 1887705916792200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30722190.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512007 + ... + 512066.

It is an arithmetic number, because the mean of its divisors is an integer number (4608333).

Almost surely, 2^30722190 is an apocalyptic number.

30722190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30722190 is an abundant number, since it is smaller than the sum of its proper divisors (43011138).

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

30722190 is a wasteful number, since it uses less digits than its factorization.

30722190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024083.

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

The square root of 30722190 is about 5542.7601427448. The cubic root of 30722190 is about 313.1968534432.

Adding to 30722190 its reverse (9122703), we get a palindrome (39844893).

The spelling of 30722190 in words is "thirty million, seven hundred twenty-two thousand, one hundred ninety".