345851772 has 24 divisors (see below), whose sum is σ = 922271616. Its totient is φ = 98814768.

The previous prime is 345851707. The next prime is 345851801. The reversal of 345851772 is 277158543.

It is a super-2 number, since 2×345851772² = 239226896391079968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 2058558 + ... + 2058725.

It is an arithmetic number, because the mean of its divisors is an integer number (38427984).

Almost surely, 2^345851772 is an apocalyptic number.

It is an amenable number.

345851772 is an abundant number, since it is smaller than the sum of its proper divisors (576419844).

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

345851772 is a wasteful number, since it uses less digits than its factorization.

345851772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117297 (or 4117295 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

The square root of 345851772 is about 18597.0904175895. The cubic root of 345851772 is about 701.9346291836.

The spelling of 345851772 in words is "three hundred forty-five million, eight hundred fifty-one thousand, seven hundred seventy-two".