351320490 has 40 divisors (see below), whose sum is σ = 944663940. Its totient is φ = 93685248.

The previous prime is 351320477. The next prime is 351320527. The reversal of 351320490 is 94023153.

It can be written as a sum of positive squares in 2 ways, for example, as 323028729 + 28291761 = 17973^2 + 5319^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 216055 + ... + 217674.

Almost surely, 2^351320490 is an apocalyptic number.

351320490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

351320490 is an abundant number, since it is smaller than the sum of its proper divisors (593343450).

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

351320490 is a wasteful number, since it uses less digits than its factorization.

351320490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433748 (or 433739 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 351320490 is about 18743.5452889788. The cubic root of 351320490 is about 705.6150359492.

The spelling of 351320490 in words is "three hundred fifty-one million, three hundred twenty thousand, four hundred ninety".