1402052640 has 48 divisors (see below), whose sum is σ = 4416467328. Its totient is φ = 373880576.

The previous prime is 1402052633. The next prime is 1402052651. The reversal of 1402052640 is 462502041.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1402052640.

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, 1459992 + ... + 1460951.

It is an arithmetic number, because the mean of its divisors is an integer number (92009736).

Almost surely, 2^1402052640 is an apocalyptic number.

1402052640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402052640 is an abundant number, since it is smaller than the sum of its proper divisors (3014414688).

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

1402052640 is a wasteful number, since it uses less digits than its factorization.

1402052640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920961 (or 2920953 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1402052640 is about 37443.9933767754. The cubic root of 1402052640 is about 1119.2354050203.

Adding to 1402052640 its reverse (462502041), we get a palindrome (1864554681).

It can be divided in two parts, 140205 and 2640, that added together give a triangular number (142845 = T₅₃₄).

The spelling of 1402052640 in words is "one billion, four hundred two million, fifty-two thousand, six hundred forty".