786728740 has 48 divisors (see below), whose sum is σ = 1916353152. Its totient is φ = 265706496.

The previous prime is 786728707. The next prime is 786728749. The reversal of 786728740 is 47827687.

It is a happy number.

It is a super-2 number, since 2×786728740² = 1237884220683975200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (786728749) 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, 32557 + ... + 51316.

It is an arithmetic number, because the mean of its divisors is an integer number (39924024).

Almost surely, 2^786728740 is an apocalyptic number.

786728740 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

786728740 is an abundant number, since it is smaller than the sum of its proper divisors (1129624412).

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

786728740 is a wasteful number, since it uses less digits than its factorization.

786728740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83956 (or 83954 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 49.

The square root of 786728740 is about 28048.6851741753. The cubic root of 786728740 is about 923.1558055416.

The spelling of 786728740 in words is "seven hundred eighty-six million, seven hundred twenty-eight thousand, seven hundred forty".