1520000 has 80 divisors (see below), whose sum is σ = 3983100. Its totient is φ = 576000.

The previous prime is 1519967. The next prime is 1520003. The reversal of 1520000 is 251.

1520000 = 26³ + 27³ + ... + 50³.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1520000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79991 + ... + 80009.

2^1520000 is an apocalyptic number.

1520000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1991550).

1520000 is an abundant number, since it is smaller than the sum of its proper divisors (2463100).

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

1520000 is an frugal number, since it uses more digits than its factorization.

1520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53 (or 26 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 8.

The square root of 1520000 is about 1232.8828005938. The cubic root of 1520000 is about 114.9779415789.

Adding to 1520000 its reverse (251), we get a palindrome (1520251).

The spelling of 1520000 in words is "one million, five hundred twenty thousand".