30307690 has 32 divisors (see below), whose sum is σ = 63803520. Its totient is φ = 10148544.

The previous prime is 30307681. The next prime is 30307691. The reversal of 30307690 is 9670303.

It is a super-2 number, since 2×30307690² = 1837112146272200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (30307691) 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, 2025 + ... + 8044.

It is an arithmetic number, because the mean of its divisors is an integer number (1993860).

Almost surely, 2^30307690 is an apocalyptic number.

30307690 is an abundant number, since it is smaller than the sum of its proper divisors (33495830).

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

30307690 is a wasteful number, since it uses less digits than its factorization.

30307690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10126.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 30307690 is about 5505.2420473581. The cubic root of 30307690 is about 311.7819331464.

Adding to 30307690 its reverse (9670303), we get a palindrome (39977993).

It can be divided in two parts, 30 and 307690, that added together give a triangular number (307720 = T₇₈₄).

The spelling of 30307690 in words is "thirty million, three hundred seven thousand, six hundred ninety".