274382820 has 36 divisors (see below), whose sum is σ = 832295100. Its totient is φ = 73168704.

The previous prime is 274382809. The next prime is 274382821. The reversal of 274382820 is 28283472.

274382820 is a `hidden beast` number, since 274 + 382 + 8 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 199317924 + 75064896 = 14118^2 + 8664^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×274382820² = 150571863822304800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (274382821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 761995 + ... + 762354.

Almost surely, 2^274382820 is an apocalyptic number.

274382820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

274382820 is an abundant number, since it is smaller than the sum of its proper divisors (557912280).

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

274382820 is a wasteful number, since it uses less digits than its factorization.

274382820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524364 (or 1524359 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 274382820 is about 16564.5048220585. The cubic root of 274382820 is about 649.8088747737.

The spelling of 274382820 in words is "two hundred seventy-four million, three hundred eighty-two thousand, eight hundred twenty".