39923028 has 36 divisors (see below), whose sum is σ = 106229760. Its totient is φ = 12607056.

The previous prime is 39923027. The next prime is 39923029. The reversal of 39923028 is 82032993.

It is an interprime number because it is at equal distance from previous prime (39923027) and next prime (39923029).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 39922983 and 39923001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39923027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28500 + ... + 29867.

Almost surely, 2^39923028 is an apocalyptic number.

39923028 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

39923028 is an abundant number, since it is smaller than the sum of its proper divisors (66306732).

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

39923028 is a wasteful number, since it uses less digits than its factorization.

39923028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58396 (or 58391 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 39923028 is about 6318.4672191917. The cubic root of 39923028 is about 341.7756813611.

The spelling of 39923028 in words is "thirty-nine million, nine hundred twenty-three thousand, twenty-eight".