276407421 has 16 divisors (see below), whose sum is σ = 388439040. Its totient is φ = 174348720.

The previous prime is 276407371. The next prime is 276407441. The reversal of 276407421 is 124704672.

It is not a de Polignac number, because 276407421 - 2¹⁷ = 276276349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276407441) 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, 49266 + ... + 54588.

It is an arithmetic number, because the mean of its divisors is an integer number (24277440).

Almost surely, 2^276407421 is an apocalyptic number.

It is an amenable number.

276407421 is a deficient number, since it is larger than the sum of its proper divisors (112031619).

276407421 is a wasteful number, since it uses less digits than its factorization.

276407421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 276407421 is about 16625.5051351831. The cubic root of 276407421 is about 651.4032178677.

The spelling of 276407421 in words is "two hundred seventy-six million, four hundred seven thousand, four hundred twenty-one".