1552400340 has 24 divisors (see below), whose sum is σ = 4346721120. Its totient is φ = 413973408.

The previous prime is 1552400321. The next prime is 1552400359. The reversal of 1552400340 is 430042551.

It is an interprime number because it is at equal distance from previous prime (1552400321) and next prime (1552400359).

It is a self number, because there is not a number n which added to its sum of digits gives 1552400340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12936610 + ... + 12936729.

It is an arithmetic number, because the mean of its divisors is an integer number (181113380).

Almost surely, 2^1552400340 is an apocalyptic number.

1552400340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1552400340 is an abundant number, since it is smaller than the sum of its proper divisors (2794320780).

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

1552400340 is a wasteful number, since it uses less digits than its factorization.

1552400340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25873351 (or 25873349 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1552400340 is about 39400.5119256083. The cubic root of 1552400340 is about 1157.8916170737.

Adding to 1552400340 its reverse (430042551), we get a palindrome (1982442891).

The spelling of 1552400340 in words is "one billion, five hundred fifty-two million, four hundred thousand, three hundred forty".