1500028665 has 16 divisors (see below), whose sum is σ = 2458584576. Its totient is φ = 780502400.

The previous prime is 1500028657. The next prime is 1500028681. The reversal of 1500028665 is 5668200051.

It is not a de Polignac number, because 1500028665 - 2³ = 1500028657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218921 + ... + 1220150.

It is an arithmetic number, because the mean of its divisors is an integer number (153661536).

Almost surely, 2^1500028665 is an apocalyptic number.

1500028665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1500028665 is a deficient number, since it is larger than the sum of its proper divisors (958555911).

1500028665 is a wasteful number, since it uses less digits than its factorization.

1500028665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439120.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1500028665 is about 38730.2035238649. The cubic root of 1500028665 is about 1144.7215343366.

The spelling of 1500028665 in words is "one billion, five hundred million, twenty-eight thousand, six hundred sixty-five".