149270440 has 48 divisors (see below), whose sum is σ = 369178740. Its totient is φ = 54278400.

The previous prime is 149270423. The next prime is 149270447. The reversal of 149270440 is 44072941.

It can be written as a sum of positive squares in 2 ways, for example, as 148011556 + 1258884 = 12166^2 + 1122^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (149270447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10581 + ... + 20260.

Almost surely, 2^149270440 is an apocalyptic number.

149270440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149270440 is an abundant number, since it is smaller than the sum of its proper divisors (219908300).

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

149270440 is a wasteful number, since it uses less digits than its factorization.

149270440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30874 (or 30859 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 149270440 is about 12217.6282477410. The cubic root of 149270440 is about 530.4664695909.

The spelling of 149270440 in words is "one hundred forty-nine million, two hundred seventy thousand, four hundred forty".