388144734 has 16 divisors (see below), whose sum is σ = 810041472. Its totient is φ = 123756248.

The previous prime is 388144721. The next prime is 388144741. The reversal of 388144734 is 437441883.

It is a super-3 number, since 3×388144734³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406184 + ... + 1406459.

It is an arithmetic number, because the mean of its divisors is an integer number (50627592).

Almost surely, 2^388144734 is an apocalyptic number.

388144734 is an abundant number, since it is smaller than the sum of its proper divisors (421896738).

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

388144734 is a wasteful number, since it uses less digits than its factorization.

388144734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812671.

The product of its digits is 258048, while the sum is 42.

The square root of 388144734 is about 19701.3891388399. The cubic root of 388144734 is about 729.4539821393.

The spelling of 388144734 in words is "three hundred eighty-eight million, one hundred forty-four thousand, seven hundred thirty-four".