290277140 has 24 divisors (see below), whose sum is σ = 612995040. Its totient is φ = 115460768.

The previous prime is 290277103. The next prime is 290277157. The reversal of 290277140 is 41772092.

290277140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 290277097 and 290277106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36962 + ... + 44121.

It is an arithmetic number, because the mean of its divisors is an integer number (25541460).

Almost surely, 2^290277140 is an apocalyptic number.

290277140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290277140 is an abundant number, since it is smaller than the sum of its proper divisors (322717900).

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

290277140 is a wasteful number, since it uses less digits than its factorization.

290277140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81271 (or 81269 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 290277140 is about 17037.5215333686. The cubic root of 290277140 is about 662.1213804319.

The spelling of 290277140 in words is "two hundred ninety million, two hundred seventy-seven thousand, one hundred forty".