1500870 has 48 divisors (see below), whose sum is σ = 4194288. Its totient is φ = 342720.

The previous prime is 1500859. The next prime is 1500871. The reversal of 1500870 is 780051.

It is a happy number.

It is a super-2 number, since 2×1500870² = 4505221513800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 960 + ... + 1980.

It is an arithmetic number, because the mean of its divisors is an integer number (87381).

2^1500870 is an apocalyptic number.

1500870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1500870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2097144).

1500870 is an abundant number, since it is smaller than the sum of its proper divisors (2693418).

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

1500870 is a wasteful number, since it uses less digits than its factorization.

1500870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 1500870 is about 1225.0999959187. The cubic root of 1500870 is about 114.4935511200.

The spelling of 1500870 in words is "one million, five hundred thousand, eight hundred seventy".