1531480 has 16 divisors (see below), whose sum is σ = 3445920. Its totient is φ = 612576.

The previous prime is 1531477. The next prime is 1531487. The reversal of 1531480 is 841351.

It is a super-3 number, since 3×1531480³ = 10775941959533376000, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19104 + ... + 19183.

It is an arithmetic number, because the mean of its divisors is an integer number (215370).

2^1531480 is an apocalyptic number.

1531480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1531480 is an abundant number, since it is smaller than the sum of its proper divisors (1914440).

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

1531480 is a wasteful number, since it uses less digits than its factorization.

1531480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38298 (or 38294 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1531480 is about 1237.5297976211. The cubic root of 1531480 is about 115.2666778988.

The spelling of 1531480 in words is "one million, five hundred thirty-one thousand, four hundred eighty".