149278698 has 24 divisors (see below), whose sum is σ = 323696100. Its totient is φ = 49719744.

The previous prime is 149278697. The next prime is 149278699. The reversal of 149278698 is 896872941.

It is an interprime number because it is at equal distance from previous prime (149278697) and next prime (149278699).

It can be written as a sum of positive squares in 2 ways, for example, as 146240649 + 3038049 = 12093^2 + 1743^2 .

It is not an unprimeable number, because it can be changed into a prime (149278693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27558 + ... + 32526.

Almost surely, 2^149278698 is an apocalyptic number.

149278698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

149278698 is an abundant number, since it is smaller than the sum of its proper divisors (174417402).

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

149278698 is a wasteful number, since it uses less digits than its factorization.

149278698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6646 (or 6643 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 149278698 is about 12217.9661973669. The cubic root of 149278698 is about 530.4762516378.

The spelling of 149278698 in words is "one hundred forty-nine million, two hundred seventy-eight thousand, six hundred ninety-eight".