388377402 has 64 divisors (see below), whose sum is σ = 929525760. Its totient is φ = 105773184.

The previous prime is 388377401. The next prime is 388377449. The reversal of 388377402 is 204773883.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (388377401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394603 + ... + 395585.

It is an arithmetic number, because the mean of its divisors is an integer number (14523840).

Almost surely, 2^388377402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388377402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464762880).

388377402 is an abundant number, since it is smaller than the sum of its proper divisors (541148358).

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

388377402 is a wasteful number, since it uses less digits than its factorization.

388377402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 388377402 is about 19707.2931170163. The cubic root of 388377402 is about 729.5997067306.

The spelling of 388377402 in words is "three hundred eighty-eight million, three hundred seventy-seven thousand, four hundred two".