127987490 has 16 divisors (see below), whose sum is σ = 231001848. Its totient is φ = 51056256.

The previous prime is 127987481. The next prime is 127987501. The reversal of 127987490 is 94789721.

It can be written as a sum of positive squares in 4 ways, for example, as 93683041 + 34304449 = 9679^2 + 5857^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13427 + ... + 20886.

Almost surely, 2^127987490 is an apocalyptic number.

127987490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127987490 is a deficient number, since it is larger than the sum of its proper divisors (103014358).

127987490 is a wasteful number, since it uses less digits than its factorization.

127987490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34693.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 127987490 is about 11313.1556163610. The cubic root of 127987490 is about 503.9520010769.

The spelling of 127987490 in words is "one hundred twenty-seven million, nine hundred eighty-seven thousand, four hundred ninety".