30979770 has 32 divisors (see below), whose sum is σ = 74535552. Its totient is φ = 8240832.

The previous prime is 30979733. The next prime is 30979777. The reversal of 30979770 is 7797903.

It is a super-2 number, since 2×30979770² = 1919492298505800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30979777) 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, 14064 + ... + 16116.

It is an arithmetic number, because the mean of its divisors is an integer number (2329236).

Almost surely, 2^30979770 is an apocalyptic number.

30979770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30979770 is an abundant number, since it is smaller than the sum of its proper divisors (43555782).

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

30979770 is a wasteful number, since it uses less digits than its factorization.

30979770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566.

The product of its (nonzero) digits is 83349, while the sum is 42.

The square root of 30979770 is about 5565.9473587162. The cubic root of 30979770 is about 314.0697168956.

The spelling of 30979770 in words is "thirty million, nine hundred seventy-nine thousand, seven hundred seventy".