149263240 has 64 divisors (see below), whose sum is σ = 404035200. Its totient is φ = 48480768.

The previous prime is 149263237. The next prime is 149263241. The reversal of 149263240 is 42362941.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (149263241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8709 + ... + 19348.

It is an arithmetic number, because the mean of its divisors is an integer number (6313050).

Almost surely, 2^149263240 is an apocalyptic number.

149263240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149263240 is an abundant number, since it is smaller than the sum of its proper divisors (254771960).

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

149263240 is a wasteful number, since it uses less digits than its factorization.

149263240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28094 (or 28090 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 149263240 is about 12217.3335879806. Note that the first 3 decimals coincide. The cubic root of 149263240 is about 530.4579405077.

The spelling of 149263240 in words is "one hundred forty-nine million, two hundred sixty-three thousand, two hundred forty".