15400045 has 16 divisors (see below), whose sum is σ = 19768320. Its totient is φ = 11476224.

The previous prime is 15400043. The next prime is 15400057. The reversal of 15400045 is 54000451.

It is not a de Polignac number, because 15400045 - 2¹ = 15400043 is a prime.

It is a super-2 number, since 2×15400045² = 474322772004050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15399995 and 15400031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15400043) 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, 7876 + ... + 9634.

It is an arithmetic number, because the mean of its divisors is an integer number (1235520).

Almost surely, 2^15400045 is an apocalyptic number.

It is an amenable number.

15400045 is a deficient number, since it is larger than the sum of its proper divisors (4368275).

15400045 is a wasteful number, since it uses less digits than its factorization.

15400045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 15400045 is about 3924.2891075964. The cubic root of 15400045 is about 248.7944358047.

Adding to 15400045 its reverse (54000451), we get a palindrome (69400496).

The spelling of 15400045 in words is "fifteen million, four hundred thousand, forty-five".