68149328 has 40 divisors (see below), whose sum is σ = 150568488. Its totient is φ = 29601792.

The previous prime is 68149321. The next prime is 68149357. The reversal of 68149328 is 82394186.

It can be written as a sum of positive squares in 4 ways, for example, as 11478544 + 56670784 = 3388^2 + 7528^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68149321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6101 + ... + 13172.

Almost surely, 2^68149328 is an apocalyptic number.

68149328 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68149328 is an abundant number, since it is smaller than the sum of its proper divisors (82419160).

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

68149328 is a wasteful number, since it uses less digits than its factorization.

68149328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19311 (or 19305 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 68149328 is about 8255.2606258070. The cubic root of 68149328 is about 408.4640689067.

The spelling of 68149328 in words is "sixty-eight million, one hundred forty-nine thousand, three hundred twenty-eight".