336532640 has 48 divisors (see below), whose sum is σ = 800182152. Its totient is φ = 133745664.

The previous prime is 336532639. The next prime is 336532657. The reversal of 336532640 is 46235633.

It can be written as a sum of positive squares in 4 ways, for example, as 139523344 + 197009296 = 11812^2 + 14036^2 .

It is a super-2 number, since 2×336532640² = 226508435570739200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 336532597 and 336532606.

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, 18422 + ... + 31818.

Almost surely, 2^336532640 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 336532640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400091076).

336532640 is an abundant number, since it is smaller than the sum of its proper divisors (463649512).

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

336532640 is a wasteful number, since it uses less digits than its factorization.

336532640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13569 (or 13561 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 336532640 is about 18344.8259735545. The cubic root of 336532640 is about 695.5724903567.

The spelling of 336532640 in words is "three hundred thirty-six million, five hundred thirty-two thousand, six hundred forty".