16020455 has 16 divisors (see below), whose sum is σ = 21112704. Its totient is φ = 11573280.

The previous prime is 16020449. The next prime is 16020457. The reversal of 16020455 is 55402061.

It is not a de Polignac number, because 16020455 - 2¹² = 16016359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16020455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16020457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8072 + ... + 9858.

It is an arithmetic number, because the mean of its divisors is an integer number (1319544).

Almost surely, 2^16020455 is an apocalyptic number.

16020455 is a deficient number, since it is larger than the sum of its proper divisors (5092249).

16020455 is a wasteful number, since it uses less digits than its factorization.

16020455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 16020455 is about 4002.5560583207. The cubic root of 16020455 is about 252.0915462722.

The spelling of 16020455 in words is "sixteen million, twenty thousand, four hundred fifty-five".