16020380 has 12 divisors (see below), whose sum is σ = 33642840. Its totient is φ = 6408144.

The previous prime is 16020359. The next prime is 16020413. The reversal of 16020380 is 8302061.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 801019 = 16020380 / (1 + 6 + 0 + 2 + 0 + 3 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400490 + ... + 400529.

It is an arithmetic number, because the mean of its divisors is an integer number (2803570).

Almost surely, 2^16020380 is an apocalyptic number.

16020380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16020380 is an abundant number, since it is smaller than the sum of its proper divisors (17622460).

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

16020380 is a wasteful number, since it uses less digits than its factorization.

16020380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801028 (or 801026 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 16020380 is about 4002.5466892967. The cubic root of 16020380 is about 252.0911528815.

The spelling of 16020380 in words is "sixteen million, twenty thousand, three hundred eighty".