149728 has 12 divisors (see below), whose sum is σ = 294840. Its totient is φ = 74848.

The previous prime is 149717. The next prime is 149729. The reversal of 149728 is 827941.

It is a self number, because there is not a number n which added to its sum of digits gives 149728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2308 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (24570).

2¹⁴⁹⁷²⁸ is an apocalyptic number.

It is an amenable number.

149728 is a deficient number, since it is larger than the sum of its proper divisors (145112).

149728 is an equidigital number, since it uses as much as digits as its factorization.

149728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4689 (or 4681 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 149728 is about 386.9470247980. The cubic root of 149728 is about 53.1007931238.

It can be divided in two parts, 1 and 49728, that added together give a square (49729 = 223²).

The spelling of 149728 in words is "one hundred forty-nine thousand, seven hundred twenty-eight".