38897740 has 48 divisors (see below), whose sum is σ = 94248000. Its totient is φ = 13208832.

The previous prime is 38897737. The next prime is 38897743. The reversal of 38897740 is 4779883.

38897740 = T₇₁ + T₇₂ + ... + T₆₁₅.

It is an interprime number because it is at equal distance from previous prime (38897737) and next prime (38897743).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38897743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13986 + ... + 16534.

It is an arithmetic number, because the mean of its divisors is an integer number (1963500).

Almost surely, 2^38897740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38897740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47124000).

38897740 is an abundant number, since it is smaller than the sum of its proper divisors (55350260).

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

38897740 is a wasteful number, since it uses less digits than its factorization.

38897740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674 (or 2672 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 38897740 is about 6236.8052719321. The cubic root of 38897740 is about 338.8244871897.

It can be divided in two parts, 388977 and 40, that added together give a cube (389017 = 73³).

The spelling of 38897740 in words is "thirty-eight million, eight hundred ninety-seven thousand, seven hundred forty".