1401528478 has 24 divisors (see below), whose sum is σ = 2448622872. Its totient is φ = 599894064.

The previous prime is 1401528473. The next prime is 1401528487. The reversal of 1401528478 is 8748251041.

It is a self number, because there is not a number n which added to its sum of digits gives 1401528478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401528473) 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, 72400 + ... + 89692.

It is an arithmetic number, because the mean of its divisors is an integer number (102025953).

Almost surely, 2^1401528478 is an apocalyptic number.

1401528478 is a deficient number, since it is larger than the sum of its proper divisors (1047094394).

1401528478 is a wasteful number, since it uses less digits than its factorization.

1401528478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18136 (or 18129 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 1401528478 is about 37436.9934423159. The cubic root of 1401528478 is about 1119.0959110206.

The spelling of 1401528478 in words is "one billion, four hundred one million, five hundred twenty-eight thousand, four hundred seventy-eight".