348023640 has 64 divisors (see below), whose sum is σ = 1045432800. Its totient is φ = 92685312.

The previous prime is 348023629. The next prime is 348023651. The reversal of 348023640 is 46320843.

It is an interprime number because it is at equal distance from previous prime (348023629) and next prime (348023651).

It is a super-2 number, since 2×348023640² = 242240907997699200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 348023598 and 348023607.

It is a congruent number.

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, 126924 + ... + 129636.

Almost surely, 2^348023640 is an apocalyptic number.

348023640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

348023640 is an abundant number, since it is smaller than the sum of its proper divisors (697409160).

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

348023640 is a wasteful number, since it uses less digits than its factorization.

348023640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796 (or 3792 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 348023640 is about 18655.3917139255. The cubic root of 348023640 is about 703.4008924619.

The spelling of 348023640 in words is "three hundred forty-eight million, twenty-three thousand, six hundred forty".