102456398 has 32 divisors (see below), whose sum is σ = 184170240. Its totient is φ = 42197760.

The previous prime is 102456397. The next prime is 102456407. The reversal of 102456398 is 893654201.

It is a happy number.

It is a super-2 number, since 2×102456398² = 20994626982268808, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102456397) 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, 4286 + ... + 14942.

It is an arithmetic number, because the mean of its divisors is an integer number (5755320).

Almost surely, 2^102456398 is an apocalyptic number.

102456398 is a deficient number, since it is larger than the sum of its proper divisors (81713842).

102456398 is a wasteful number, since it uses less digits than its factorization.

102456398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10712.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 102456398 is about 10122.0747873151. The cubic root of 102456398 is about 467.9287123258.

The spelling of 102456398 in words is "one hundred two million, four hundred fifty-six thousand, three hundred ninety-eight".