214278740 has 48 divisors (see below), whose sum is σ = 489110160. Its totient is φ = 78382080.

The previous prime is 214278733. The next prime is 214278763. The reversal of 214278740 is 47872412.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 19061956 + 195216784 = 4366^2 + 13972^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 214278740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24560 + ... + 32120.

It is an arithmetic number, because the mean of its divisors is an integer number (10189795).

Almost surely, 2^214278740 is an apocalyptic number.

214278740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214278740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244555080).

214278740 is an abundant number, since it is smaller than the sum of its proper divisors (274831420).

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

214278740 is a wasteful number, since it uses less digits than its factorization.

214278740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7692 (or 7690 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 214278740 is about 14638.2628750819. The cubic root of 214278740 is about 598.4019884510.

The spelling of 214278740 in words is "two hundred fourteen million, two hundred seventy-eight thousand, seven hundred forty".