172400936 has 16 divisors (see below), whose sum is σ = 326114100. Its totient is φ = 85437184.

The previous prime is 172400929. The next prime is 172400953. The reversal of 172400936 is 639004271.

It can be written as a sum of positive squares in 2 ways, for example, as 105062500 + 67338436 = 10250^2 + 8206^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94451 + ... + 96258.

Almost surely, 2^172400936 is an apocalyptic number.

It is an amenable number.

172400936 is a deficient number, since it is larger than the sum of its proper divisors (153713164).

172400936 is a wasteful number, since it uses less digits than its factorization.

172400936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190828 (or 190824 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 172400936 is about 13130.1536929314. The cubic root of 172400936 is about 556.5615584754.

The spelling of 172400936 in words is "one hundred seventy-two million, four hundred thousand, nine hundred thirty-six".