214748391 has 16 divisors (see below), whose sum is σ = 336389760. Its totient is φ = 120138720.

The previous prime is 214748389. The next prime is 214748399. The reversal of 214748391 is 193847412.

It is not a de Polignac number, because 214748391 - 2¹ = 214748389 is a prime.

It is a super-2 number, since 2×214748391² = 92233742874177762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214748399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249861 + ... + 250718.

It is an arithmetic number, because the mean of its divisors is an integer number (21024360).

Almost surely, 2^214748391 is an apocalyptic number.

214748391 is a deficient number, since it is larger than the sum of its proper divisors (121641369).

214748391 is a wasteful number, since it uses less digits than its factorization.

214748391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500606.

The product of its digits is 48384, while the sum is 39.

The square root of 214748391 is about 14654.2959912785. The cubic root of 214748391 is about 598.8388571394.

The spelling of 214748391 in words is "two hundred fourteen million, seven hundred forty-eight thousand, three hundred ninety-one".