149807240 has 64 divisors (see below), whose sum is σ = 371459520. Its totient is φ = 53920000.

The previous prime is 149807219. The next prime is 149807249. The reversal of 149807240 is 42708941.

It is a self number, because there is not a number n which added to its sum of digits gives 149807240.

It is not an unprimeable number, because it can be changed into a prime (149807249) 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, 42755 + ... + 46125.

It is an arithmetic number, because the mean of its divisors is an integer number (5804055).

Almost surely, 2^149807240 is an apocalyptic number.

149807240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149807240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185729760).

149807240 is an abundant number, since it is smaller than the sum of its proper divisors (221652280).

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

149807240 is a wasteful number, since it uses less digits than its factorization.

149807240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 149807240 is about 12239.5767900692. The cubic root of 149807240 is about 531.1015891780.

The spelling of 149807240 in words is "one hundred forty-nine million, eight hundred seven thousand, two hundred forty".