153870 has 32 divisors (see below), whose sum is σ = 387072. Its totient is φ = 39072.

The previous prime is 153841. The next prime is 153871. The reversal of 153870 is 78351.

Added to its reverse (78351) it gives a triangular number (232221 = T₆₈₁).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 153870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153871) 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, 579 + ... + 801.

It is an arithmetic number, because the mean of its divisors is an integer number (12096).

2¹⁵³⁸⁷⁰ is an apocalyptic number.

153870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 153870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193536).

153870 is an abundant number, since it is smaller than the sum of its proper divisors (233202).

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

153870 is a wasteful number, since it uses less digits than its factorization.

153870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 153870 is about 392.2626670995. The cubic root of 153870 is about 53.5859973075.

Adding to 153870 its reverse (78351), we get a triangular number (232221 = T₆₈₁).

The spelling of 153870 in words is "one hundred fifty-three thousand, eight hundred seventy".