1215478050 has 24 divisors (see below), whose sum is σ = 3014385936. Its totient is φ = 324127440.

The previous prime is 1215478037. The next prime is 1215478063. The reversal of 1215478050 is 508745121.

It is an interprime number because it is at equal distance from previous prime (1215478037) and next prime (1215478063).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4051444 + ... + 4051743.

It is an arithmetic number, because the mean of its divisors is an integer number (125599414).

Almost surely, 2^1215478050 is an apocalyptic number.

1215478050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215478050 is an abundant number, since it is smaller than the sum of its proper divisors (1798907886).

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

1215478050 is a wasteful number, since it uses less digits than its factorization.

1215478050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103202 (or 8103197 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 1215478050 is about 34863.7067736636. The cubic root of 1215478050 is about 1067.2079213787.

The spelling of 1215478050 in words is "one billion, two hundred fifteen million, four hundred seventy-eight thousand, fifty".