402348396773376 has 399 divisors, whose sum is σ = 1207323033220423. Its totient is φ = 134023702118400.

The previous prime is 402348396773329. The next prime is 402348396773377. The reversal of 402348396773376 is 673377693843204.

The square root of 402348396773376 is 20058624.

It is a perfect power (a square), and thus also a powerful number.

402348396773376 is a `hidden beast` number, since 4 + 0 + 2 + 3 + 483 + 9 + 6 + 7 + 73 + 3 + 76 = 666.

It is a super-2 number, since 2×402348396773376² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402348396773377) 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 20 ways as a sum of consecutive naturals, for example, 277290417451 + ... + 277290418901.

Almost surely, 2^{402348396773376} is an apocalyptic number.

402348396773376 is the 20058624-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402348396773376

402348396773376 is an abundant number, since it is smaller than the sum of its proper divisors (804974636447047).

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

402348396773376 is an frugal number, since it uses more digits than its factorization.

402348396773376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956 (or 1456 counting only the distinct ones).

The product of its (nonzero) digits is 2304433152, while the sum is 72.

The spelling of 402348396773376 in words is "four hundred two trillion, three hundred forty-eight billion, three hundred ninety-six million, seven hundred seventy-three thousand, three hundred seventy-six".