1040781672 has 48 divisors (see below), whose sum is σ = 3221468640. Its totient is φ = 297366048.

The previous prime is 1040781661. The next prime is 1040781673. The reversal of 1040781672 is 2761870401.

It is a super-2 number, since 2×1040781672² = 2166452977542231168, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1040781673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1032018 + ... + 1033025.

It is an arithmetic number, because the mean of its divisors is an integer number (67113930).

Almost surely, 2^1040781672 is an apocalyptic number.

1040781672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1040781672 is an abundant number, since it is smaller than the sum of its proper divisors (2180686968).

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

1040781672 is a wasteful number, since it uses less digits than its factorization.

1040781672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065062 (or 2065055 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1040781672 is about 32261.1480266899. The cubic root of 1040781672 is about 1013.4131730530.

The spelling of 1040781672 in words is "one billion, forty million, seven hundred eighty-one thousand, six hundred seventy-two".