306986764 has 72 divisors (see below), whose sum is σ = 643462512. Its totient is φ = 127733760.

The previous prime is 306986749. The next prime is 306986777. The reversal of 306986764 is 467689603.

It is a Harshad number since it is a multiple of its sum of digits (49).

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 23 ways as a sum of consecutive naturals, for example, 1273684 + ... + 1273924.

Almost surely, 2^306986764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306986764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321731256).

306986764 is an abundant number, since it is smaller than the sum of its proper divisors (336475748).

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

306986764 is a wasteful number, since it uses less digits than its factorization.

306986764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 306986764 is about 17521.0377546537. The cubic root of 306986764 is about 674.5899761330.

The spelling of 306986764 in words is "three hundred six million, nine hundred eighty-six thousand, seven hundred sixty-four".