276421272 has 64 divisors (see below), whose sum is σ = 752544000. Its totient is φ = 84276864.

The previous prime is 276421267. The next prime is 276421279. The reversal of 276421272 is 272124672.

It is a happy number.

It is a super-2 number, since 2×276421272² = 152817439228195968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276421279) 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, 2773 + ... + 23675.

It is an arithmetic number, because the mean of its divisors is an integer number (11758500).

Almost surely, 2^276421272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276421272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376272000).

276421272 is an abundant number, since it is smaller than the sum of its proper divisors (476122728).

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

276421272 is a wasteful number, since it uses less digits than its factorization.

276421272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20960 (or 20956 counting only the distinct ones).

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

The square root of 276421272 is about 16625.9216887365. The cubic root of 276421272 is about 651.4140984671.

The spelling of 276421272 in words is "two hundred seventy-six million, four hundred twenty-one thousand, two hundred seventy-two".