2780028453 has 16 divisors (see below), whose sum is σ = 3911096000. Its totient is φ = 1751621760.

The previous prime is 2780028431. The next prime is 2780028487. The reversal of 2780028453 is 3548200872.

It is not a de Polignac number, because 2780028453 - 2⁸ = 2780028197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780038453) 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, 33928 + ... + 81921.

It is an arithmetic number, because the mean of its divisors is an integer number (244443500).

Almost surely, 2^2780028453 is an apocalyptic number.

It is an amenable number.

2780028453 is a deficient number, since it is larger than the sum of its proper divisors (1131067547).

2780028453 is a wasteful number, since it uses less digits than its factorization.

2780028453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116292.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 2780028453 is about 52725.9751261179. The cubic root of 2780028453 is about 1406.1006649441.

The spelling of 2780028453 in words is "two billion, seven hundred eighty million, twenty-eight thousand, four hundred fifty-three".