156428 has 6 divisors (see below), whose sum is σ = 273756. Its totient is φ = 78212.

The previous prime is 156421. The next prime is 156437. The reversal of 156428 is 824651.

It is a junction number, because it is equal to n+sod(n) for n = 156397 and 156406.

It is not an unprimeable number, because it can be changed into a prime (156421) by changing a digit.

156428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19550 + ... + 19557.

It is an arithmetic number, because the mean of its divisors is an integer number (45626).

2¹⁵⁶⁴²⁸ is an apocalyptic number.

It is an amenable number.

156428 is a deficient number, since it is larger than the sum of its proper divisors (117328).

156428 is a wasteful number, since it uses less digits than its factorization.

156428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39111 (or 39109 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 156428 is about 395.5097976030. The cubic root of 156428 is about 53.8813122558.

The spelling of 156428 in words is "one hundred fifty-six thousand, four hundred twenty-eight".