38722001 has 4 divisors (see below), whose sum is σ = 38854452. Its totient is φ = 38589552.

The previous prime is 38721983. The next prime is 38722027. The reversal of 38722001 is 10022783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30747025 + 7974976 = 5545^2 + 2824^2 .

It is a cyclic number.

It is not a de Polignac number, because 38722001 - 2¹⁰ = 38720977 is a prime.

It is a super-2 number, since 2×38722001² = 2998786722888002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38722601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65786 + ... + 66371.

It is an arithmetic number, because the mean of its divisors is an integer number (9713613).

Almost surely, 2^38722001 is an apocalyptic number.

It is an amenable number.

38722001 is a deficient number, since it is larger than the sum of its proper divisors (132451).

38722001 is a wasteful number, since it uses less digits than its factorization.

38722001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132450.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 38722001 is about 6222.7004588040. The cubic root of 38722001 is about 338.3134499924.

Adding to 38722001 its reverse (10022783), we get a palindrome (48744784).

The spelling of 38722001 in words is "thirty-eight million, seven hundred twenty-two thousand, one".