214451990 has 16 divisors (see below), whose sum is σ = 386223552. Its totient is φ = 85734144.

The previous prime is 214451989. The next prime is 214452001. The reversal of 214451990 is 99154412.

It is a self number, because there is not a number n which added to its sum of digits gives 214451990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18182 + ... + 27558.

It is an arithmetic number, because the mean of its divisors is an integer number (24138972).

Almost surely, 2^214451990 is an apocalyptic number.

214451990 is a deficient number, since it is larger than the sum of its proper divisors (171771562).

214451990 is a wasteful number, since it uses less digits than its factorization.

214451990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11671.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 214451990 is about 14644.1793897780. The cubic root of 214451990 is about 598.5632195905.

The spelling of 214451990 in words is "two hundred fourteen million, four hundred fifty-one thousand, nine hundred ninety".