305305550490 has 32 divisors (see below), whose sum is σ = 732749172480. Its totient is φ = 81413052224.

The previous prime is 305305550461. The next prime is 305305550509. The reversal of 305305550490 is 94055503503.

It is a super-2 number, since 2×305305550490² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1903807 + ... + 2057933.

It is an arithmetic number, because the mean of its divisors is an integer number (22898411640).

Almost surely, 2^305305550490 is an apocalyptic number.

305305550490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305305550490 is an abundant number, since it is smaller than the sum of its proper divisors (427443621990).

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

305305550490 is a wasteful number, since it uses less digits than its factorization.

305305550490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220166.

The product of its (nonzero) digits is 202500, while the sum is 39.

The spelling of 305305550490 in words is "three hundred five billion, three hundred five million, five hundred fifty thousand, four hundred ninety".