1552402340 has 48 divisors (see below), whose sum is σ = 3426088512. Its totient is φ = 590115456.

The previous prime is 1552402321. The next prime is 1552402349. The reversal of 1552402340 is 432042551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1552402349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7427 + ... + 56213.

It is an arithmetic number, because the mean of its divisors is an integer number (71376844).

Almost surely, 2^1552402340 is an apocalyptic number.

1552402340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1552402340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1713044256).

1552402340 is an abundant number, since it is smaller than the sum of its proper divisors (1873686172).

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

1552402340 is a wasteful number, since it uses less digits than its factorization.

1552402340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48876 (or 48874 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1552402340 is about 39400.5373059810. The cubic root of 1552402340 is about 1157.8921143213.

Adding to 1552402340 its reverse (432042551), we get a palindrome (1984444891).

The spelling of 1552402340 in words is "one billion, five hundred fifty-two million, four hundred two thousand, three hundred forty".