16440870 has 32 divisors (see below), whose sum is σ = 41780448. Its totient is φ = 4126208.

The previous prime is 16440869. The next prime is 16440899. The reversal of 16440870 is 7804461.

It is a super-3 number, since 3×16440870³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

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, 15609 + ... + 16628.

It is an arithmetic number, because the mean of its divisors is an integer number (1305639).

Almost surely, 2^16440870 is an apocalyptic number.

16440870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16440870 is an abundant number, since it is smaller than the sum of its proper divisors (25339578).

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

16440870 is a wasteful number, since it uses less digits than its factorization.

16440870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32264.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 16440870 is about 4054.7342699615. The cubic root of 16440870 is about 254.2776945126.

The spelling of 16440870 in words is "sixteen million, four hundred forty thousand, eight hundred seventy".