207972146 has 4 divisors (see below), whose sum is σ = 311958222. Its totient is φ = 103986072.

The previous prime is 207972139. The next prime is 207972151. The reversal of 207972146 is 641279702.

207972146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 131217025 + 76755121 = 11455^2 + 8761^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51993035 + ... + 51993038.

Almost surely, 2^207972146 is an apocalyptic number.

207972146 is a deficient number, since it is larger than the sum of its proper divisors (103986076).

207972146 is a wasteful number, since it uses less digits than its factorization.

207972146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103986075.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 207972146 is about 14421.2394058208. The cubic root of 207972146 is about 592.4727646273.

The spelling of 207972146 in words is "two hundred seven million, nine hundred seventy-two thousand, one hundred forty-six".