213672140 has 24 divisors (see below), whose sum is σ = 489503952. Its totient is φ = 77698880.

The previous prime is 213672131. The next prime is 213672143. The reversal of 213672140 is 41276312.

It is not an unprimeable number, because it can be changed into a prime (213672143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485399 + ... + 485838.

It is an arithmetic number, because the mean of its divisors is an integer number (20395998).

Almost surely, 2^213672140 is an apocalyptic number.

213672140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213672140 is an abundant number, since it is smaller than the sum of its proper divisors (275831812).

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

213672140 is a wasteful number, since it uses less digits than its factorization.

213672140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971257 (or 971255 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 213672140 is about 14617.5285188708. The cubic root of 213672140 is about 597.8367842766.

The spelling of 213672140 in words is "two hundred thirteen million, six hundred seventy-two thousand, one hundred forty".