1545920 has 28 divisors (see below), whose sum is σ = 3681984. Its totient is φ = 618240.

The previous prime is 1545917. The next prime is 1545949. The reversal of 1545920 is 295451.

1545920 = 40² + 41² + ... + 167².

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1545920.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096 + ... + 2735.

2^1545920 is an apocalyptic number.

1545920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1545920 is an abundant number, since it is smaller than the sum of its proper divisors (2136064).

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

1545920 is an equidigital number, since it uses as much as digits as its factorization.

1545920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848 (or 4838 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1545920 is about 1243.3503126633. The cubic root of 1545920 is about 115.6278202380.

The spelling of 1545920 in words is "one million, five hundred forty-five thousand, nine hundred twenty".