355247420 has 48 divisors (see below), whose sum is σ = 849235968. Its totient is φ = 123562560.

The previous prime is 355247413. The next prime is 355247429. The reversal of 355247420 is 24742553.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355247429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30044 + ... + 40163.

It is an arithmetic number, because the mean of its divisors is an integer number (17692416).

Almost surely, 2^355247420 is an apocalyptic number.

It is an amenable number.

355247420 is an abundant number, since it is smaller than the sum of its proper divisors (493988548).

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

355247420 is a wasteful number, since it uses less digits than its factorization.

355247420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70250 (or 70248 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 32.

The square root of 355247420 is about 18848.0083828504. The cubic root of 355247420 is about 708.2343351687.

Adding to 355247420 its reverse (24742553), we get a palindrome (379989973).

The spelling of 355247420 in words is "three hundred fifty-five million, two hundred forty-seven thousand, four hundred twenty".