1500990 has 16 divisors (see below), whose sum is σ = 3602448. Its totient is φ = 400256.

The previous prime is 1500973. The next prime is 1500991. The reversal of 1500990 is 990051.

It is a happy number.

1500990 is a modest number, since divided by 990 gives 150 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1500990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500991) 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, 24987 + ... + 25046.

It is an arithmetic number, because the mean of its divisors is an integer number (225153).

2^1500990 is an apocalyptic number.

1500990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1500990 is an abundant number, since it is smaller than the sum of its proper divisors (2101458).

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

1500990 is a wasteful number, since it uses less digits than its factorization.

1500990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50043.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 1500990 is about 1225.1489705338. The cubic root of 1500990 is about 114.4966024303.

The spelling of 1500990 in words is "one million, five hundred thousand, nine hundred ninety".