273445920 has 288 divisors, whose sum is σ = 1038308544. Its totient is φ = 64972800.

The previous prime is 273445903. The next prime is 273445937. The reversal of 273445920 is 29544372.

273445920 is a `hidden beast` number, since 27 + 3 + 44 + 592 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (273445903) and next prime (273445937).

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 966099 + ... + 966381.

It is an arithmetic number, because the mean of its divisors is an integer number (3605238).

Almost surely, 2^273445920 is an apocalyptic number.

273445920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 273445920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519154272).

273445920 is an abundant number, since it is smaller than the sum of its proper divisors (764862624).

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

273445920 is a wasteful number, since it uses less digits than its factorization.

273445920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 273445920 is about 16536.2002890628. The cubic root of 273445920 is about 649.0684248802.

The spelling of 273445920 in words is "two hundred seventy-three million, four hundred forty-five thousand, nine hundred twenty".