38747142 has 72 divisors (see below), whose sum is σ = 98594496. Its totient is φ = 10965024.

The previous prime is 38747141. The next prime is 38747143. The reversal of 38747142 is 24174783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38747141) and next prime (38747143).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 38747097 and 38747106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38747141) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 173643 + ... + 173865.

It is an arithmetic number, because the mean of its divisors is an integer number (1369368).

Almost surely, 2^38747142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38747142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49297248).

38747142 is an abundant number, since it is smaller than the sum of its proper divisors (59847354).

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

38747142 is a wasteful number, since it uses less digits than its factorization.

38747142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 432 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 38747142 is about 6224.7202346772. The cubic root of 38747142 is about 338.3866529786.

The spelling of 38747142 in words is "thirty-eight million, seven hundred forty-seven thousand, one hundred forty-two".