307442898 has 64 divisors (see below), whose sum is σ = 784465920. Its totient is φ = 87429456.

The previous prime is 307442897. The next prime is 307442899. The reversal of 307442898 is 898244703.

It is an interprime number because it is at equal distance from previous prime (307442897) and next prime (307442899).

It is a super-2 number, since 2×307442898² = 189042271061276808, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (307442897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84015 + ... + 87597.

It is an arithmetic number, because the mean of its divisors is an integer number (12257280).

Almost surely, 2^307442898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307442898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392232960).

307442898 is an abundant number, since it is smaller than the sum of its proper divisors (477023022).

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

307442898 is a wasteful number, since it uses less digits than its factorization.

307442898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828 (or 3822 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 307442898 is about 17534.0496748469. The cubic root of 307442898 is about 674.9239222900.

The spelling of 307442898 in words is "three hundred seven million, four hundred forty-two thousand, eight hundred ninety-eight".