307274220 has 144 divisors (see below), whose sum is σ = 1022112000. Its totient is φ = 74102400.

The previous prime is 307274119. The next prime is 307274239. The reversal of 307274220 is 22472703.

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, 615531 + ... + 616029.

It is an arithmetic number, because the mean of its divisors is an integer number (7098000).

Almost surely, 2^307274220 is an apocalyptic number.

307274220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307274220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511056000).

307274220 is an abundant number, since it is smaller than the sum of its proper divisors (714837780).

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

307274220 is a wasteful number, since it uses less digits than its factorization.

307274220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 307274220 is about 17529.2390023070. The cubic root of 307274220 is about 674.8004677724.

The spelling of 307274220 in words is "three hundred seven million, two hundred seventy-four thousand, two hundred twenty".