402015452 has 24 divisors (see below), whose sum is σ = 746403840. Its totient is φ = 188924400.

The previous prime is 402015443. The next prime is 402015457. The reversal of 402015452 is 254510204.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402015457) 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 7 ways as a sum of consecutive naturals, for example, 11174 + ... + 30477.

It is an arithmetic number, because the mean of its divisors is an integer number (31100160).

Almost surely, 2^402015452 is an apocalyptic number.

It is an amenable number.

402015452 is a deficient number, since it is larger than the sum of its proper divisors (344388388).

402015452 is a wasteful number, since it uses less digits than its factorization.

402015452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41801 (or 41799 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 402015452 is about 20050.3229899171. The cubic root of 402015452 is about 738.0417252036.

Adding to 402015452 its reverse (254510204), we get a palindrome (656525656).

The spelling of 402015452 in words is "four hundred two million, fifteen thousand, four hundred fifty-two".