933640428 has 48 divisors (see below), whose sum is σ = 2494888704. Its totient is φ = 266199360.

The previous prime is 933640427. The next prime is 933640429. The reversal of 933640428 is 824046339.

It is an interprime number because it is at equal distance from previous prime (933640427) and next prime (933640429).

It is not an unprimeable number, because it can be changed into a prime (933640427) 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 15 ways as a sum of consecutive naturals, for example, 29926 + ... + 52562.

It is an arithmetic number, because the mean of its divisors is an integer number (51976848).

Almost surely, 2^933640428 is an apocalyptic number.

It is an amenable number.

933640428 is an abundant number, since it is smaller than the sum of its proper divisors (1561248276).

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

933640428 is a wasteful number, since it uses less digits than its factorization.

933640428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23142 (or 23140 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 933640428 is about 30555.5302359491. The cubic root of 933640428 is about 977.3719773118.

The spelling of 933640428 in words is "nine hundred thirty-three million, six hundred forty thousand, four hundred twenty-eight".