273978990 has 64 divisors (see below), whose sum is σ = 762393600. Its totient is φ = 69882912.

The previous prime is 273978983. The next prime is 273979003. The reversal of 273978990 is 99879372.

It is a super-2 number, since 2×273978990² = 150128973922840200, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15850 + ... + 28269.

It is an arithmetic number, because the mean of its divisors is an integer number (11912400).

Almost surely, 2^273978990 is an apocalyptic number.

273978990 is an abundant number, since it is smaller than the sum of its proper divisors (488414610).

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

273978990 is a wasteful number, since it uses less digits than its factorization.

273978990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44158 (or 44152 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 273978990 is about 16552.3107148217. The cubic root of 273978990 is about 649.4899272529.

Subtracting from 273978990 its sum of digits (54), we obtain a triangular number (273978936 = T₂₃₄₀₈).

The spelling of 273978990 in words is "two hundred seventy-three million, nine hundred seventy-eight thousand, nine hundred ninety".