354690138 has 32 divisors (see below), whose sum is σ = 814602240. Its totient is φ = 101824560.

The previous prime is 354690121. The next prime is 354690143. The reversal of 354690138 is 831096453.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 354690096 and 354690105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140170 + ... + 142677.

It is an arithmetic number, because the mean of its divisors is an integer number (25456320).

Almost surely, 2^354690138 is an apocalyptic number.

354690138 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

354690138 is an abundant number, since it is smaller than the sum of its proper divisors (459912102).

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

354690138 is a wasteful number, since it uses less digits than its factorization.

354690138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282882.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 354690138 is about 18833.2190026028. The cubic root of 354690138 is about 707.8638020435.

The spelling of 354690138 in words is "three hundred fifty-four million, six hundred ninety thousand, one hundred thirty-eight".