306940356 has 36 divisors (see below), whose sum is σ = 781471600. Its totient is φ = 101575728.

The previous prime is 306940339. The next prime is 306940357. The reversal of 306940356 is 653049603.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 306940356.

It is not an unprimeable number, because it can be changed into a prime (306940357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25666 + ... + 35673.

Almost surely, 2^306940356 is an apocalyptic number.

306940356 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

306940356 is an abundant number, since it is smaller than the sum of its proper divisors (474531244).

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

306940356 is a wasteful number, since it uses less digits than its factorization.

306940356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61488 (or 61483 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 306940356 is about 17519.7133538195. The cubic root of 306940356 is about 674.5559812371. Note that the first 3 decimals are identical.

Adding to 306940356 its reverse (653049603), we get a palindrome (959989959).

The spelling of 306940356 in words is "three hundred six million, nine hundred forty thousand, three hundred fifty-six".