1245878208 has 168 divisors, whose sum is σ = 3740188608. Its totient is φ = 396085248.

The previous prime is 1245878177. The next prime is 1245878219. The reversal of 1245878208 is 8028785421.

It is a happy number.

It is a Cunningham number, because it is equal to 35297²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1128985 + ... + 1130087.

Almost surely, 2^1245878208 is an apocalyptic number.

1245878208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245878208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870094304).

1245878208 is an abundant number, since it is smaller than the sum of its proper divisors (2494310400).

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

1245878208 is a wasteful number, since it uses less digits than its factorization.

1245878208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 1245878208 is about 35296.9999858345. Note that the first 4 decimals coincide. The cubic root of 1245878208 is about 1076.0320236642.

The spelling of 1245878208 in words is "one billion, two hundred forty-five million, eight hundred seventy-eight thousand, two hundred eight".