388772542 has 16 divisors (see below), whose sum is σ = 624962592. Its totient is φ = 180908640.

The previous prime is 388772539. The next prime is 388772557. The reversal of 388772542 is 245277883.

It is a super-2 number, since 2×388772542² = 302288178826283528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 388772492 and 388772501.

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, 112509 + ... + 115912.

It is an arithmetic number, because the mean of its divisors is an integer number (39060162).

Almost surely, 2^388772542 is an apocalyptic number.

388772542 is a deficient number, since it is larger than the sum of its proper divisors (236190050).

388772542 is a wasteful number, since it uses less digits than its factorization.

388772542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228483.

The product of its digits is 752640, while the sum is 46.

The square root of 388772542 is about 19717.3157909488. The cubic root of 388772542 is about 729.8470574694.

The spelling of 388772542 in words is "three hundred eighty-eight million, seven hundred seventy-two thousand, five hundred forty-two".