156740 has 24 divisors (see below), whose sum is σ = 349272. Its totient is φ = 58880.

The previous prime is 156733. The next prime is 156749. The reversal of 156740 is 47651.

156740 = T₃₁ + T₃₂ + ... + T₉₈.

156740 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 21316 + 135424 = 146^2 + 368^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156749) by changing a digit.

156740 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110 + ... + 570.

It is an arithmetic number, because the mean of its divisors is an integer number (14553).

2¹⁵⁶⁷⁴⁰ is an apocalyptic number.

156740 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 156740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174636).

156740 is an abundant number, since it is smaller than the sum of its proper divisors (192532).

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

156740 is a wasteful number, since it uses less digits than its factorization.

156740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 156740 is about 395.9040287747. The cubic root of 156740 is about 53.9171110581.

It can be divided in two parts, 156 and 740, that multiplied together give a triangular number (115440 = T₄₈₀).

The spelling of 156740 in words is "one hundred fifty-six thousand, seven hundred forty".