149108640 has 48 divisors (see below), whose sum is σ = 469693728. Its totient is φ = 39762176.

The previous prime is 149108627. The next prime is 149108647. The reversal of 149108640 is 46801941.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (149108647) 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 7 ways as a sum of consecutive naturals, for example, 154842 + ... + 155801.

It is an arithmetic number, because the mean of its divisors is an integer number (9785286).

Almost surely, 2^149108640 is an apocalyptic number.

149108640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149108640 is an abundant number, since it is smaller than the sum of its proper divisors (320585088).

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

149108640 is a wasteful number, since it uses less digits than its factorization.

149108640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310661 (or 310653 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 149108640 is about 12211.0048726548. The cubic root of 149108640 is about 530.2747359278.

The spelling of 149108640 in words is "one hundred forty-nine million, one hundred eight thousand, six hundred forty".