511306994 has 32 divisors (see below), whose sum is σ = 914499072. Its totient is φ = 211680000.

The previous prime is 511306993. The next prime is 511307003. The reversal of 511306994 is 499603115.

It is a super-2 number, since 2×511306994² = 522869684226632072, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (511306993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10457 + ... + 33644.

It is an arithmetic number, because the mean of its divisors is an integer number (28578096).

Almost surely, 2^511306994 is an apocalyptic number.

511306994 is a deficient number, since it is larger than the sum of its proper divisors (403192078).

511306994 is a wasteful number, since it uses less digits than its factorization.

511306994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44162.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 511306994 is about 22612.0983988660. The cubic root of 511306994 is about 799.6388964048.

The spelling of 511306994 in words is "five hundred eleven million, three hundred six thousand, nine hundred ninety-four".