348002138 has 32 divisors (see below), whose sum is σ = 634703040. Its totient is φ = 141039360.

The previous prime is 348002113. The next prime is 348002153. The reversal of 348002138 is 831200843.

It is a happy number.

It is a super-2 number, since 2×348002138² = 242210976105142088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 348002138.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17381 + ... + 31592.

It is an arithmetic number, because the mean of its divisors is an integer number (19834470).

Almost surely, 2^348002138 is an apocalyptic number.

348002138 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

348002138 is a deficient number, since it is larger than the sum of its proper divisors (286700902).

348002138 is a wasteful number, since it uses less digits than its factorization.

348002138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49022.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 348002138 is about 18654.8154105046. The cubic root of 348002138 is about 703.3864060538.

The spelling of 348002138 in words is "three hundred forty-eight million, two thousand, one hundred thirty-eight".