67572738 has 32 divisors (see below), whose sum is σ = 151632000. Its totient is φ = 22303728.

The previous prime is 67572677. The next prime is 67572749. The reversal of 67572738 is 83727576.

67572738 is a `hidden beast` number, since 6 + 7 + 572 + 73 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 67572693 and 67572702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513 + ... + 11636.

It is an arithmetic number, because the mean of its divisors is an integer number (4738500).

Almost surely, 2^67572738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67572738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75816000).

67572738 is an abundant number, since it is smaller than the sum of its proper divisors (84059262).

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

67572738 is a wasteful number, since it uses less digits than its factorization.

67572738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12263 (or 12257 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 67572738 is about 8220.2638643781. The cubic root of 67572738 is about 407.3088428078.

The spelling of 67572738 in words is "sixty-seven million, five hundred seventy-two thousand, seven hundred thirty-eight".