1206885420 has 240 divisors, whose sum is σ = 4318399008. Its totient is φ = 279521280.

The previous prime is 1206885409. The next prime is 1206885443. The reversal of 1206885420 is 245886021.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 356335 + ... + 359705.

Almost surely, 2^1206885420 is an apocalyptic number.

1206885420 is a gapful number since it is divisible by the number (10) 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 1206885420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159199504).

1206885420 is an abundant number, since it is smaller than the sum of its proper divisors (3111513588).

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

1206885420 is a wasteful number, since it uses less digits than its factorization.

1206885420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 1206885420 is about 34740.2564757372. The cubic root of 1206885420 is about 1064.6871527034.

The spelling of 1206885420 in words is "one billion, two hundred six million, eight hundred eighty-five thousand, four hundred twenty".