340784040 has 64 divisors (see below), whose sum is σ = 1082496960. Its totient is φ = 85529600.

The previous prime is 340784027. The next prime is 340784047. The reversal of 340784040 is 40487043.

It is a super-2 number, since 2×340784040² = 232267523837443200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 340783989 and 340784007.

It is not an unprimeable number, because it can be changed into a prime (340784047) 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, 81486 + ... + 85565.

It is an arithmetic number, because the mean of its divisors is an integer number (16914015).

Almost surely, 2^340784040 is an apocalyptic number.

340784040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

340784040 is an abundant number, since it is smaller than the sum of its proper divisors (741712920).

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

340784040 is a wasteful number, since it uses less digits than its factorization.

340784040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167082 (or 167078 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 340784040 is about 18460.3369416704. The cubic root of 340784040 is about 698.4892861972.

The spelling of 340784040 in words is "three hundred forty million, seven hundred eighty-four thousand, forty".