38397970 has 32 divisors (see below), whose sum is σ = 75850992. Its totient is φ = 13907712.

The previous prime is 38397937. The next prime is 38397973. The reversal of 38397970 is 7979383.

It can be written as a sum of positive squares in 8 ways, for example, as 4397409 + 34000561 = 2097^2 + 5831^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38397970.

It is not an unprimeable number, because it can be changed into a prime (38397973) 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, 4104 + ... + 9676.

Almost surely, 2^38397970 is an apocalyptic number.

38397970 is a deficient number, since it is larger than the sum of its proper divisors (37453022).

38397970 is a wasteful number, since it uses less digits than its factorization.

38397970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 38397970 is about 6196.6095568464. The cubic root of 38397970 is about 337.3671209871.

The spelling of 38397970 in words is "thirty-eight million, three hundred ninety-seven thousand, nine hundred seventy".