274856820 has 48 divisors (see below), whose sum is σ = 879543168. Its totient is φ = 62824320.

The previous prime is 274856779. The next prime is 274856837. The reversal of 274856820 is 28658472.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 326791 + ... + 327630.

It is an arithmetic number, because the mean of its divisors is an integer number (18323816).

Almost surely, 2^274856820 is an apocalyptic number.

274856820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

274856820 is an abundant number, since it is smaller than the sum of its proper divisors (604686348).

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

274856820 is a wasteful number, since it uses less digits than its factorization.

274856820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654440 (or 654438 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 274856820 is about 16578.8063502775. The cubic root of 274856820 is about 650.1828440249.

The spelling of 274856820 in words is "two hundred seventy-four million, eight hundred fifty-six thousand, eight hundred twenty".