1212978048 has 64 divisors (see below), whose sum is σ = 3362083200. Its totient is φ = 386743808.

The previous prime is 1212978037. The next prime is 1212978077. The reversal of 1212978048 is 8408792121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59838 + ... + 77501.

It is an arithmetic number, because the mean of its divisors is an integer number (52532550).

Almost surely, 2^1212978048 is an apocalyptic number.

It is an amenable number.

1212978048 is an abundant number, since it is smaller than the sum of its proper divisors (2149105152).

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

1212978048 is a wasteful number, since it uses less digits than its factorization.

1212978048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137379 (or 137367 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1212978048 is about 34827.8343857323. The cubic root of 1212978048 is about 1066.4757394383.

The spelling of 1212978048 in words is "one billion, two hundred twelve million, nine hundred seventy-eight thousand, forty-eight".