290277138 has 16 divisors (see below), whose sum is σ = 581900256. Its totient is φ = 96534720.

The previous prime is 290277103. The next prime is 290277157. The reversal of 290277138 is 831772092.

It is a junction number, because it is equal to n+sod(n) for n = 290277096 and 290277105.

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, 53268 + ... + 58463.

It is an arithmetic number, because the mean of its divisors is an integer number (36368766).

Almost surely, 2^290277138 is an apocalyptic number.

290277138 is an abundant number, since it is smaller than the sum of its proper divisors (291623118).

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

290277138 is a wasteful number, since it uses less digits than its factorization.

290277138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112169.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 290277138 is about 17037.5214746747. The cubic root of 290277138 is about 662.1213789113.

The spelling of 290277138 in words is "two hundred ninety million, two hundred seventy-seven thousand, one hundred thirty-eight".