309628770990 has 96 divisors (see below), whose sum is σ = 943017842304. Its totient is φ = 64338442560.

The previous prime is 309628770943. The next prime is 309628771009. The reversal of 309628770990 is 99077826903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9558004 + ... + 9590343.

It is an arithmetic number, because the mean of its divisors is an integer number (9823102524).

Almost surely, 2^309628770990 is an apocalyptic number.

309628770990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

309628770990 is an abundant number, since it is smaller than the sum of its proper divisors (633389071314).

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

309628770990 is a wasteful number, since it uses less digits than its factorization.

309628770990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19148382 (or 19148375 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 309628770990 in words is "three hundred nine billion, six hundred twenty-eight million, seven hundred seventy thousand, nine hundred ninety".