149753640 has 32 divisors (see below), whose sum is σ = 449261280. Its totient is φ = 39934272.

The previous prime is 149753633. The next prime is 149753641. The reversal of 149753640 is 46357941.

It is not an unprimeable number, because it can be changed into a prime (149753641) 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, 623854 + ... + 624093.

It is an arithmetic number, because the mean of its divisors is an integer number (14039415).

Almost surely, 2^149753640 is an apocalyptic number.

149753640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149753640 is an abundant number, since it is smaller than the sum of its proper divisors (299507640).

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

149753640 is a wasteful number, since it uses less digits than its factorization.

149753640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247961 (or 1247957 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 149753640 is about 12237.3869759847. The cubic root of 149753640 is about 531.0382401236.

The spelling of 149753640 in words is "one hundred forty-nine million, seven hundred fifty-three thousand, six hundred forty".