1236420384 has 48 divisors (see below), whose sum is σ = 3386722752. Its totient is φ = 394220288.

The previous prime is 1236420359. The next prime is 1236420391. The reversal of 1236420384 is 4830246321.

It is a tau number, because it is divible by the number of its divisors (48).

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, 277779 + ... + 282194.

It is an arithmetic number, because the mean of its divisors is an integer number (70556724).

Almost surely, 2^1236420384 is an apocalyptic number.

It is an amenable number.

1236420384 is an abundant number, since it is smaller than the sum of its proper divisors (2150302368).

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

1236420384 is a wasteful number, since it uses less digits than its factorization.

1236420384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560009 (or 560001 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 1236420384 is about 35162.7698567675. The cubic root of 1236420384 is about 1073.3022804779.

The spelling of 1236420384 in words is "one billion, two hundred thirty-six million, four hundred twenty thousand, three hundred eighty-four".