102768401 has 4 divisors (see below), whose sum is σ = 103362612. Its totient is φ = 102174192.

The previous prime is 102768377. The next prime is 102768437. The reversal of 102768401 is 104867201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104867201 = 73 ⋅1436537.

It can be written as a sum of positive squares in 2 ways, for example, as 92140801 + 10627600 = 9599^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 102768401 - 2²² = 98574097 is a prime.

It is a super-2 number, since 2×102768401² = 21122688488193602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102768481) 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, 296846 + ... + 297191.

It is an arithmetic number, because the mean of its divisors is an integer number (25840653).

Almost surely, 2^102768401 is an apocalyptic number.

It is an amenable number.

102768401 is a deficient number, since it is larger than the sum of its proper divisors (594211).

102768401 is an equidigital number, since it uses as much as digits as its factorization.

102768401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594210.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 102768401 is about 10137.4750801173. The cubic root of 102768401 is about 468.4032140616.

The spelling of 102768401 in words is "one hundred two million, seven hundred sixty-eight thousand, four hundred one".