102478428 has 36 divisors (see below), whose sum is σ = 278970328. Its totient is φ = 31531680.

The previous prime is 102478423. The next prime is 102478429. The reversal of 102478428 is 824874201.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 102478392 and 102478401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102478423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109018 + ... + 109953.

Almost surely, 2^102478428 is an apocalyptic number.

102478428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

102478428 is an abundant number, since it is smaller than the sum of its proper divisors (176491900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102478428 is a wasteful number, since it uses less digits than its factorization.

102478428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218994 (or 218989 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 102478428 is about 10123.1629444557. The cubic root of 102478428 is about 467.9622476670.

The spelling of 102478428 in words is "one hundred two million, four hundred seventy-eight thousand, four hundred twenty-eight".