273399780 has 72 divisors (see below), whose sum is σ = 813250368. Its totient is φ = 68613632.

The previous prime is 273399761. The next prime is 273399787. The reversal of 273399780 is 87993372.

It is not an unprimeable number, because it can be changed into a prime (273399787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9457 + ... + 25223.

It is an arithmetic number, because the mean of its divisors is an integer number (11295144).

Almost surely, 2^273399780 is an apocalyptic number.

273399780 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 273399780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406625184).

273399780 is an abundant number, since it is smaller than the sum of its proper divisors (539850588).

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

273399780 is a wasteful number, since it uses less digits than its factorization.

273399780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15813 (or 15794 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 273399780 is about 16534.8051092234. The cubic root of 273399780 is about 649.0319158919.

The spelling of 273399780 in words is "two hundred seventy-three million, three hundred ninety-nine thousand, seven hundred eighty".