345691500 has 384 divisors, whose sum is σ = 1303271424. Its totient is φ = 69120000.

The previous prime is 345691499. The next prime is 345691519. The reversal of 345691500 is 5196543.

It is a happy number.

It is a super-2 number, since 2×345691500² = 239005226344500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4735464 + ... + 4735536.

It is an arithmetic number, because the mean of its divisors is an integer number (3393936).

Almost surely, 2^345691500 is an apocalyptic number.

345691500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345691500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651635712).

345691500 is an abundant number, since it is smaller than the sum of its proper divisors (957579924).

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

345691500 is a wasteful number, since it uses less digits than its factorization.

345691500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 345691500 is about 18592.7808570961. The cubic root of 345691500 is about 701.8261840264.

The spelling of 345691500 in words is "three hundred forty-five million, six hundred ninety-one thousand, five hundred".