2054406780 has 48 divisors (see below), whose sum is σ = 6391489440. Its totient is φ = 547841664.

The previous prime is 2054406773. The next prime is 2054406811. The reversal of 2054406780 is 876044502.

2054406780 is a `hidden beast` number, since 205 + 440 + 6 + 7 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1901689 + ... + 1902768.

It is an arithmetic number, because the mean of its divisors is an integer number (133156030).

Almost surely, 2^2054406780 is an apocalyptic number.

2054406780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2054406780 is an abundant number, since it is smaller than the sum of its proper divisors (4337082660).

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

2054406780 is a wasteful number, since it uses less digits than its factorization.

2054406780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804475 (or 3804467 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 2054406780 is about 45325.5643097800. The cubic root of 2054406780 is about 1271.2436986835.

The spelling of 2054406780 in words is "two billion, fifty-four million, four hundred six thousand, seven hundred eighty".