1928700040 has 64 divisors (see below), whose sum is σ = 4406400000. Its totient is φ = 759686400.

The previous prime is 1928700023. The next prime is 1928700041. The reversal of 1928700040 is 400078291.

It is a junction number, because it is equal to n+sod(n) for n = 1928699975 and 1928700011.

It is not an unprimeable number, because it can be changed into a prime (1928700041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802761 + ... + 805159.

It is an arithmetic number, because the mean of its divisors is an integer number (68850000).

Almost surely, 2^1928700040 is an apocalyptic number.

1928700040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1928700040 is an abundant number, since it is smaller than the sum of its proper divisors (2477699960).

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

1928700040 is a wasteful number, since it uses less digits than its factorization.

1928700040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710 (or 2706 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1928700040 is about 43916.9675638016. The cubic root of 1928700040 is about 1244.7674689244.

The spelling of 1928700040 in words is "one billion, nine hundred twenty-eight million, seven hundred thousand, forty".