402213052 has 48 divisors (see below), whose sum is σ = 780595200. Its totient is φ = 180480960.

The previous prime is 402213037. The next prime is 402213059. The reversal of 402213052 is 250312204.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402213059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189477 + ... + 191587.

It is an arithmetic number, because the mean of its divisors is an integer number (16262400).

Almost surely, 2^402213052 is an apocalyptic number.

402213052 is the 10028-th decagonal number.

It is an amenable number.

402213052 is a deficient number, since it is larger than the sum of its proper divisors (378382148).

402213052 is a wasteful number, since it uses less digits than its factorization.

402213052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 2264 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 402213052 is about 20055.2499859762. The cubic root of 402213052 is about 738.1626269887.

Adding to 402213052 its reverse (250312204), we get a palindrome (652525256).

The spelling of 402213052 in words is "four hundred two million, two hundred thirteen thousand, fifty-two".