67904172 has 36 divisors (see below), whose sum is σ = 196168336. Its totient is φ = 19401120.

The previous prime is 67904153. The next prime is 67904191. The reversal of 67904172 is 27140976.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (67904153) and next prime (67904191).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×67904172² = 9221953150011168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 134479 + ... + 134982.

Almost surely, 2^67904172 is an apocalyptic number.

It is an amenable number.

67904172 is an abundant number, since it is smaller than the sum of its proper divisors (128264164).

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

67904172 is a wasteful number, since it uses less digits than its factorization.

67904172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269478 (or 269473 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 67904172 is about 8240.3987767583. The cubic root of 67904172 is about 407.9736863076.

Adding to 67904172 its product of nonzero digits (21168), we get a triangular number (67925340 = T₁₁₆₅₅).

The spelling of 67904172 in words is "sixty-seven million, nine hundred four thousand, one hundred seventy-two".