355897720 has 64 divisors (see below), whose sum is σ = 851277600. Its totient is φ = 133911040.

The previous prime is 355897697. The next prime is 355897781. The reversal of 355897720 is 27798553.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

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, 195615 + ... + 197425.

Almost surely, 2^355897720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 355897720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425638800).

355897720 is an abundant number, since it is smaller than the sum of its proper divisors (495379880).

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

355897720 is a wasteful number, since it uses less digits than its factorization.

355897720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1835 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 355897720 is about 18865.2516548282. The cubic root of 355897720 is about 708.6662257497. Note that the first 3 decimals are identical.

The spelling of 355897720 in words is "three hundred fifty-five million, eight hundred ninety-seven thousand, seven hundred twenty".