67540228 has 36 divisors (see below), whose sum is σ = 137966220. Its totient is φ = 28846272.

The previous prime is 67540211. The next prime is 67540267. The reversal of 67540228 is 82204576.

It can be written as a sum of positive squares in 2 ways, for example, as 63011844 + 4528384 = 7938^2 + 2128^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67540193 and 67540202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99426 + ... + 100102.

It is an arithmetic number, because the mean of its divisors is an integer number (3832395).

Almost surely, 2^67540228 is an apocalyptic number.

It is an amenable number.

67540228 is an abundant number, since it is smaller than the sum of its proper divisors (70425992).

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

67540228 is a wasteful number, since it uses less digits than its factorization.

67540228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 67540228 is about 8218.2861960387. The cubic root of 67540228 is about 407.2435120497.

The spelling of 67540228 in words is "sixty-seven million, five hundred forty thousand, two hundred twenty-eight".