1531896 has 64 divisors (see below), whose sum is σ = 4147200. Its totient is φ = 470400.

The previous prime is 1531861. The next prime is 1531897. The reversal of 1531896 is 6981351.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531897) 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, 21541 + ... + 21611.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2^1531896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1531896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073600).

1531896 is an abundant number, since it is smaller than the sum of its proper divisors (2615304).

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

1531896 is a wasteful number, since it uses less digits than its factorization.

1531896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 136 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 1531896 is about 1237.6978629698. The cubic root of 1531896 is about 115.2771136857.

The spelling of 1531896 in words is "one million, five hundred thirty-one thousand, eight hundred ninety-six".