38699730 has 48 divisors (see below), whose sum is σ = 101911680. Its totient is φ = 10187424.

The previous prime is 38699719. The next prime is 38699737. The reversal of 38699730 is 3799683.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (38699737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4389 + ... + 9831.

It is an arithmetic number, because the mean of its divisors is an integer number (2123160).

Almost surely, 2^38699730 is an apocalyptic number.

38699730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38699730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50955840).

38699730 is an abundant number, since it is smaller than the sum of its proper divisors (63211950).

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

38699730 is a wasteful number, since it uses less digits than its factorization.

38699730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5535 (or 5532 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 38699730 is about 6220.9107050335. The cubic root of 38699730 is about 338.2485771069.

The spelling of 38699730 in words is "thirty-eight million, six hundred ninety-nine thousand, seven hundred thirty".