1022402987 has 8 divisors (see below), whose sum is σ = 1026432000. Its totient is φ = 1018382824.

The previous prime is 1022402957. The next prime is 1022402999. The reversal of 1022402987 is 7892042201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022402987 - 2¹² = 1022398891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022402947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308264 + ... + 311562.

It is an arithmetic number, because the mean of its divisors is an integer number (128304000).

Almost surely, 2^1022402987 is an apocalyptic number.

1022402987 is a deficient number, since it is larger than the sum of its proper divisors (4029013).

1022402987 is an equidigital number, since it uses as much as digits as its factorization.

1022402987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1022402987 is about 31975.0369350842. The cubic root of 1022402987 is about 1007.4125802230.

The spelling of 1022402987 in words is "one billion, twenty-two million, four hundred two thousand, nine hundred eighty-seven".