30723490 has 24 divisors (see below), whose sum is σ = 64332252. Its totient is φ = 10533600.

The previous prime is 30723481. The next prime is 30723509. The reversal of 30723490 is 9432703.

It can be written as a sum of positive squares in 2 ways, for example, as 30503529 + 219961 = 5523^2 + 469^2 .

It is a super-3 number, since 3×30723490³ (a number of 23 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30861 + ... + 31840.

Almost surely, 2^30723490 is an apocalyptic number.

30723490 is an abundant number, since it is smaller than the sum of its proper divisors (33608762).

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

30723490 is a wasteful number, since it uses less digits than its factorization.

30723490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62722 (or 62715 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30723490 is about 5542.8774115977. The cubic root of 30723490 is about 313.2012709903.

It can be divided in two parts, 30723 and 490, that added together give a palindrome (31213).

The spelling of 30723490 in words is "thirty million, seven hundred twenty-three thousand, four hundred ninety".