1406551920828 has 24 divisors (see below), whose sum is σ = 3475010628432. Its totient is φ = 441271190784.

The previous prime is 1406551920827. The next prime is 1406551920847. The reversal of 1406551920828 is 8280291556041.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406551920827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3447430975 + ... + 3447431382.

It is an arithmetic number, because the mean of its divisors is an integer number (144792109518).

Almost surely, 2^{1406551920828} is an apocalyptic number.

It is an amenable number.

1406551920828 is an abundant number, since it is smaller than the sum of its proper divisors (2068458707604).

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

1406551920828 is a wasteful number, since it uses less digits than its factorization.

1406551920828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6894862381 (or 6894862379 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 1406551920828 in words is "one trillion, four hundred six billion, five hundred fifty-one million, nine hundred twenty thousand, eight hundred twenty-eight".