38404740 has 48 divisors (see below), whose sum is σ = 117311040. Its totient is φ = 9310080.

The previous prime is 38404739. The next prime is 38404747. The reversal of 38404740 is 4740483.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 38404698 and 38404707.

It is not an unprimeable number, because it can be changed into a prime (38404747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28435 + ... + 29754.

It is an arithmetic number, because the mean of its divisors is an integer number (2443980).

Almost surely, 2^38404740 is an apocalyptic number.

38404740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38404740 is an abundant number, since it is smaller than the sum of its proper divisors (78906300).

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

38404740 is a wasteful number, since it uses less digits than its factorization.

38404740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58212 (or 58210 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 38404740 is about 6197.1557992356. The cubic root of 38404740 is about 337.3869470455.

The spelling of 38404740 in words is "thirty-eight million, four hundred four thousand, seven hundred forty".