1545980 has 24 divisors (see below), whose sum is σ = 3438288. Its totient is φ = 581888.

The previous prime is 1545959. The next prime is 1545983. The reversal of 1545980 is 895451.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1934 + ... + 2613.

It is an arithmetic number, because the mean of its divisors is an integer number (143262).

2^1545980 is an apocalyptic number.

1545980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1545980 is an abundant number, since it is smaller than the sum of its proper divisors (1892308).

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

1545980 is a wasteful number, since it uses less digits than its factorization.

1545980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573 (or 4571 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1545980 is about 1243.3744407860. The cubic root of 1545980 is about 115.6293161281.

The spelling of 1545980 in words is "one million, five hundred forty-five thousand, nine hundred eighty".