1201993428 has 24 divisors (see below), whose sum is σ = 2952265120. Its totient is φ = 379576800.

The previous prime is 1201993427. The next prime is 1201993469. The reversal of 1201993428 is 8243991021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201993427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635723 + ... + 2636178.

Almost surely, 2^1201993428 is an apocalyptic number.

It is an amenable number.

1201993428 is an abundant number, since it is smaller than the sum of its proper divisors (1750271692).

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

1201993428 is a wasteful number, since it uses less digits than its factorization.

1201993428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5271927 (or 5271925 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1201993428 is about 34669.7768668909. The cubic root of 1201993428 is about 1063.2466695834.

The spelling of 1201993428 in words is "one billion, two hundred one million, nine hundred ninety-three thousand, four hundred twenty-eight".