1087279740 has 96 divisors (see below), whose sum is σ = 3491819520. Its totient is φ = 280584000.

The previous prime is 1087279703. The next prime is 1087279747. The reversal of 1087279740 is 479727801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087279747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15736 + ... + 49215.

It is an arithmetic number, because the mean of its divisors is an integer number (36373120).

Almost surely, 2^1087279740 is an apocalyptic number.

1087279740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087279740 is an abundant number, since it is smaller than the sum of its proper divisors (2404539780).

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

1087279740 is a wasteful number, since it uses less digits than its factorization.

1087279740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65000 (or 64992 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 1087279740 is about 32973.9251530660. The cubic root of 1087279740 is about 1028.2856264466.

The spelling of 1087279740 in words is "one billion, eighty-seven million, two hundred seventy-nine thousand, seven hundred forty".