308428836 has 24 divisors (see below), whose sum is σ = 733247424. Its totient is φ = 100869600.

The previous prime is 308428831. The next prime is 308428837. The reversal of 308428836 is 638824803.

It is not an unprimeable number, because it can be changed into a prime (308428831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241840 + ... + 243111.

It is an arithmetic number, because the mean of its divisors is an integer number (30551976).

Almost surely, 2^308428836 is an apocalyptic number.

It is an amenable number.

308428836 is an abundant number, since it is smaller than the sum of its proper divisors (424818588).

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

308428836 is a wasteful number, since it uses less digits than its factorization.

308428836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485011 (or 485009 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 308428836 is about 17562.1421244676. The cubic root of 308428836 is about 675.6446231482.

The spelling of 308428836 in words is "three hundred eight million, four hundred twenty-eight thousand, eight hundred thirty-six".