346979520 has 336 divisors, whose sum is σ = 1333743840. Its totient is φ = 82280448.

The previous prime is 346979491. The next prime is 346979561. The reversal of 346979520 is 25979643.

It is a happy number.

346979520 is a `hidden beast` number, since 34 + 6 + 97 + 9 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 930054 + ... + 930426.

Almost surely, 2^346979520 is an apocalyptic number.

346979520 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 346979520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666871920).

346979520 is an abundant number, since it is smaller than the sum of its proper divisors (986764320).

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

346979520 is a wasteful number, since it uses less digits than its factorization.

346979520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 346979520 is about 18627.3862900837. The cubic root of 346979520 is about 702.6967538619.

The spelling of 346979520 in words is "three hundred forty-six million, nine hundred seventy-nine thousand, five hundred twenty".