402214240 has 24 divisors (see below), whose sum is σ = 950231520. Its totient is φ = 160885632.

The previous prime is 402214213. The next prime is 402214247. The reversal of 402214240 is 42412204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402214247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256760 + ... + 1257079.

It is an arithmetic number, because the mean of its divisors is an integer number (39592980).

Almost surely, 2^402214240 is an apocalyptic number.

402214240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402214240 is an abundant number, since it is smaller than the sum of its proper divisors (548017280).

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

402214240 is a wasteful number, since it uses less digits than its factorization.

402214240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513854 (or 2513846 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 402214240 is about 20055.2796041342. The cubic root of 402214240 is about 738.1633537481.

Adding to 402214240 its reverse (42412204), we get a palindrome (444626444).

The spelling of 402214240 in words is "four hundred two million, two hundred fourteen thousand, two hundred forty".