274887864 has 32 divisors (see below), whose sum is σ = 763578000. Its totient is φ = 91629216.

The previous prime is 274887797. The next prime is 274887869. The reversal of 274887864 is 468788472.

It is a happy number.

It is a super-3 number, since 3×274887864³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 274887864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274887869) 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, 636099 + ... + 636530.

Almost surely, 2^274887864 is an apocalyptic number.

274887864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

274887864 is an abundant number, since it is smaller than the sum of its proper divisors (488690136).

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

274887864 is a wasteful number, since it uses less digits than its factorization.

274887864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272644 (or 1272634 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The square root of 274887864 is about 16579.7425794250. The cubic root of 274887864 is about 650.2073216376.

The spelling of 274887864 in words is "two hundred seventy-four million, eight hundred eighty-seven thousand, eight hundred sixty-four".