238728860953401 has 32 divisors (see below), whose sum is σ = 391783162812160. Its totient is φ = 125915529003264.

The previous prime is 238728860953397. The next prime is 238728860953433. The reversal of 238728860953401 is 104359068827832.

It is not a de Polignac number, because 238728860953401 - 2² = 238728860953397 is a prime.

It is a super-2 number, since 2×238728860953401² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238728860953201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20984146 + ... + 30295083.

It is an arithmetic number, because the mean of its divisors is an integer number (12243223837880).

It is a 1-persistent number, because it is pandigital, but 2⋅238728860953401 = 477457721906802 is not.

Almost surely, 2^{238728860953401} is an apocalyptic number.

238728860953401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

238728860953401 is a deficient number, since it is larger than the sum of its proper divisors (153054301858759).

238728860953401 is a wasteful number, since it uses less digits than its factorization.

238728860953401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51296305.

The product of its (nonzero) digits is 139345920, while the sum is 66.

The spelling of 238728860953401 in words is "two hundred thirty-eight trillion, seven hundred twenty-eight billion, eight hundred sixty million, nine hundred fifty-three thousand, four hundred one".