1087628397 has 32 divisors (see below), whose sum is σ = 1600634880. Its totient is φ = 653909760.

The previous prime is 1087628309. The next prime is 1087628411. The reversal of 1087628397 is 7938267801.

It is not a de Polignac number, because 1087628397 - 2¹² = 1087624301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087628497) 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, 159504 + ... + 166182.

It is an arithmetic number, because the mean of its divisors is an integer number (50019840).

Almost surely, 2^1087628397 is an apocalyptic number.

1087628397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1087628397 is a deficient number, since it is larger than the sum of its proper divisors (513006483).

1087628397 is a wasteful number, since it uses less digits than its factorization.

1087628397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6833.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 1087628397 is about 32979.2115885144. The cubic root of 1087628397 is about 1028.3955278373.

The spelling of 1087628397 in words is "one billion, eighty-seven million, six hundred twenty-eight thousand, three hundred ninety-seven".